Reporting

Our next Experimentation London Meetup will take place on **Wednesday 21st January 2026**. Please visit our [Experimentation London website](https://www.experimentationlondon.com/) for all the details and to get your FREE ticket. We have a fantastic lineup with several speakers, including: Sebastian Ankargren, Senior Data Scientist at Spotify Luke Frake, Senior Product Manager (Growth) at Spotify Johan Söderholm, Senior Customer Success Engineer at Confidence by Spotify There will also be a Spotify Q&A session! To help us manage the capacity of the space (and ensure we have the right amount of food and drink for everyone), please sign up for your ticket on our [Experimentation London website](https://www.experimentationlondon.com/), and bring your PDF ticket with you. \-\-\- **Location** *Central London location - see full address and details on the [Experimentation London website](https://www.experimentationlondon.com/)* \-\-\- **Agenda** 6:00 PM - Welcome drinks, pizza and networking 6:30 PM - Sebastian Ankargren 7:00 PM - Short break 7:15 PM - Spotify Q&A Session with Luke Frake, Johan Söderholm & Sebastian Ankargren 7:45 PM - More Networking 8:30 PM - Official end \-\-\- **Event & Speaker Guidelines** * No Sales Pitches: Our group is a space for genuine connections and learning. Tell stories. * Respect and Open-Mindedness: Embrace diversity, treat everyone with respect, and value different perspectives. * Community Spirit: Engage positively to build a supportive and collaborative community.

**Tim Ruffles presents:** *Efficient Reconciliation and Flow Control for Anti-Entropy Protocols* [https://www.cs.cornell.edu/home/rvr/papers/flowgossip.pdf](https://www.cs.cornell.edu/home/rvr/papers/flowgossip.pdf) The ideas in this paper influenced [systems at Amazon](https://www.cs.cornell.edu/projects/ladis2008/materials/rvr.pdf?), and beyond, e.g. Cassandra, Ringpop from Uber (used in Temporal). **Abstract** The paper shows that anti-entropy protocols can process only a limited rate of updates, and proposes and evaluates a new state reconciliation mechanism as well as a flow control scheme for anti-entropy protocols. **The Speaker** Tim is an engineer at [poolside.ai](http://poolside.ai/), previously at Plaid & GitHub **Location**: Appold St and Worship St corner London EC2A 2AG https://maps.app.goo.gl/GmCdcBLBCLR2ifou7 The nearest tube/train station is Liverpool St The entrance is located at the street level. This is not the main entrance of the building. **Checkin instructions:** \- Please proceed to the registration desk\. \- Have ready your Meetup handle for registration\, you need to be on the list to enter \- A small wristband will be handled to you \- There are drinks available for the night\, but no food\. **The schedule:** • 6.15pm: welcome and chitchat • 6:30pm: presentation starts • 8:00pm: presentation end Meetup are captured on video and uploaded on the PWL London Youtube channel https://www.youtube.com/channel/UCEYe-1uDIkjPtuH_qhoybnA

GSM Badminton Club is a weekly daytime badminton club based in Hackney. The club is aimed at players of all abilities but is not suitable for beginners. If you want to improve your badminton skills or just enjoy playing the game with like minded players in a friendly sporting environment, then this is the club for you to come and meet new badminton buddies as well as having fun and keeping fit. The club meet every Wednesday from 11 am to 1 pm, and we are on COURT 1,which is block booked for the year. Cost per session is £8 Good quality feather shuttles will be provided. Additional courts will be booked if needed i.e. if players exceed 8 or more. Thanks. See you soon.

I strongly suspect this recurring event no longer takes place, but I have never received any information about it since I first heard years ago and have never had any enquiry. ======= Blow the cobwebs away and get active at lunch time with a bike ride around Central Park to perk you up for your afternoon's work. Aimed at workers in the area, but all welcome. It may be possible to borrow a bike, by prior arrangement. Contact Nick [dot] Davies [at] lbbd [dot] gov [dot] uk.

**BOOK HERE**: https://sportas.co.uk/games/43534 **Game Description:** 👟 Drills led by experienced players who also join the session. 💪 Intense volleyball skills practice for individuals. 🎮 Drills and game setting. 🌟 Positive co-learning environment for rapid improvement. 🏐 Access to 18 volleyballs. Rules \- point to 15 \- max 2 games in a row \- 3 team of 6 players \- modified games situation might be applied depending on situation \(5:1\, modified 5:1 or 6:2 etc\.\) \*Privacy policy for drills and games sessions\* You may not record any footage or take photos during the session unless explicitly authorised by the organisers.

See https://www.eventbrite.co.uk/e/cycling-group-tickets-433505435427 Booking required via organiser. Attempted bookings via Hubbub will not be processed.

Hello and welcome to our next **Data & AI Leaders** event. This session brings together Heads of Data, AI, and Analytics; senior technology and engineering leaders; Principal and Staff Data/ML Engineers; Platform and Capability Leads; and strategic decision-makers responsible for shaping data and AI strategy, governance, and value delivery within their organisations. Our meetups are friendly, thoughtful, and discussion-driven, designed to create a space where leaders can share real-world experience, reflect on complex challenges, and learn from peers who are building and scaling Data and AI capabilities in the real world. This session will include leadership talks, guided discussion, Q&A, and time for networking with fellow data and AI leaders. **We run:** • Bi-monthly in-person leadership meetups and roundtables in London • Bi-monthly online sessions for our wider leadership community Please keep an eye on our Meetup page for future events. Food and refreshments will be provided for in-person events where a host venue is supporting. We are delighted to host this security-focused meetup in London on the **22nd of January,** in partnership with [Incident.io](https://incident.io/). **Speakers and Sessions:** Speaker: [Dylan Ratcliffe,](https://www.linkedin.com/in/dylanratcliffe/) Founder at Overmind Session Title: How We Detected Toil among 36,000 Changes Description: How much precious engineering time are you spending on changes that don’t really need it? In this talk, we’ll reveal how we analysed nearly 37,000 infrastructure modifications to rigorously quantify "toil"; the work that slows teams down without adding real value. We’ll share the statistical techniques and practical models we developed to find the best opportunities for safe auto-approval, and show how you can use similar methods to identify (and eliminate) wasted effort in your own workflows. We’ll also discuss pitfalls, trade-offs, and how AI can take your approval process even further. Whether you’re a platform engineer or an SRE, you’ll learn how to free up your team to focus on what really matters while keeping your systems safe and reliable. Speaker: **[Rory Malcolm](https://www.linkedin.com/in/rory-m-m/)**, Product Engineer at Incident.io Session Title: My first year as an AI engineer Description: Join Rory, Product Engineer at Incident.io, as he walks through everything the team learned in their first year building an AI capability. This session focuses on how they scaled both technically and socially, growing from early work into an engineering team able to make meaningful progress against real AI goals. Expect practical insight into team growth, collaboration, and what actually enabled progress. **Agenda (GMT / UK):** 18:00 — Welcome and refreshments 18:30 — Introduction — Ethan Sumner 18:35 — Speaker 1 19:10 — Break 19:20 — Speaker 2 19:55 — Close and networking **We are always keen to hear from:** • Speakers — leadership case studies, transformation journeys and strategic insights • Hosts — organisations able to support executive-style roundtables and meetups • Sponsors — support with venue access, refreshments, recording or accessibility If you would like to speak, sponsor, or host a future session, please get in touch with **[Ethan Sumner](https://www.linkedin.com/in/ethansumner404/)** via LinkedIn. You can find our **[YouTube channel](https://www.youtube.com/@CommunityStackHQ)**[ ](https://www.youtube.com/@CommunityStackHQ)via our community pages, where we publish selected talks and highlights. This community forms part of the[ ](https://www.meetup.com/pro/generative-ai-uk-community/)**[Community Stack ecosystem](https://www.meetup.com/pro/generative-ai-uk-community/)** and follows the **Community Stack Code of Conduct**, ensuring a respectful, inclusive and welcoming environment where leaders can share openly and learn from one another.

For our first meetup of 2026, we welcome our very own James Dales to present. *\*\* Please only register if you are able to attend as the number of available places is limited \*\** **The future of Location Intelligence in Power BI** For many, mapping in Power BI is a few bubbles representing sales in different towns or countries - but does really add any value to your report? In this session we're going to explore how to create maps that help you exploit the value of the location in your data. The Icon Map visuals unlock a powerful range of capabilities across all industry sectors. In a demo packed session we'll explore: \- Route and flow maps \- Easiest way to add icons and images \- Overlaying your data on demographics \- 3D buildings and landscape \- Going indoors \- Realtime \- Huge datasets We'll see what's possible today, and also showcase the powerful new capabilities that are being released soon to take your maps to new levels. **Agenda** 18:30 - Welcome, drinks, pizza & networking 19:00 - Main Session 20:00 - Close **Venue** Tenth Revolution offices in London. Aldgate House, 33 Aldgate High St, London EC3N 1DL Please provide your first and last name when registering for the event, as this is provided to building security to allow you entrance into the venue.

**BOOK HERE**: https://sportas.co.uk/games/43695 **Game Description:** 🎯 LEVEL UP YOUR VOLLEYBALL GAME 🎯 Ready to sharpen your skills and take your performance to the next level? The Level Up Series is built for players who want to grow their game through high-quality, personalised coaching in a competitive environment. 👊 Each session includes: ✅ 1 hour of focused coaching tailored to the group’s needs ✅ 1 hour of game scenarios to apply what you’ve learned in real time ✅ Individual feedback to help you progress faster 🏐 Led by Coach Chester – a dedicated libero and rising leader in the UK volleyball scene, focused on athlete development: • 🏐 Coach for 2 LVA Pantheon Division 3 teams • 💼 Former President, Treasurer & Social Secretary, King’s College London Volleyball • 👑 Founder & CEO, Pantheon Volleyball • 🤝 Key Connector for up-and-coming athletes and programmes 👨‍🏫 Chester also brings his coaching and leadership to: • Pantheon Volleyball initiatives and talent development • KCL Mixed Premier Team in LUSL League • Volleyball England as a Level 1 Qualified Assistant Coach With a unique blend of on-court experience, organisational leadership, and entrepreneurial drive, Chester is deeply committed to helping players unlock their potential and supporting the next generation of volleyball talent. **Rules** 1\. Players should be respectful and follow the coach’s instructions when given 2\. Remain kind and courteous to players around you regardless of their skill level 3\. Enjoy yourself and remember to ask the coach if you have any questions \(hint: there are no stupid ones\) Photos and videos may be taken during the sessions and used as promotional material for the Pantheon Volleyball Club. By signing up, you give your consent to be filmed and to be used for the purposes as mentioned above. If you would like to opt out of this, please send a message to the pantheon volleyball page.

Hello and welcome to our next **GenAI UK in-person event**, delivered **in collaboration with [Data & AI Leaders](https://www.meetup.com/data-and-ai-leaders-uk/)**[.](https://www.meetup.com/data-and-ai-leaders-uk/) This session brings together engineers, ML practitioners, data and platform teams, product leaders, and technologists who are building and operating generative AI systems in real-world environments, alongside senior practitioners responsible for scaling those capabilities inside organisations. This collaborative session focuses on what happens when GenAI moves beyond experimentation, exploring how AI capabilities are built, scaled, and operated in production, and how teams reduce operational toil while maintaining security, reliability, and delivery velocity. Our meetups are friendly, welcoming, and practitioner-led, creating space for the community to learn from real systems, real teams, and real trade-offs. This session will include technical and experience-led talks, Q&A, and open discussion with members of the GenAI UK community. **We run:** • Online events for our UK & global audience • In-person meetups in London Please keep an eye on our Meetup page for future sessions. We are delighted to host this **in-person GenAI UK event in London on the 22nd of January**, in collaboration with **[Data & AI Leaders](https://www.meetup.com/data-and-ai-leaders-uk/)** and **[Incident.io](https://incident.io/)**. **Speakers and Sessions:** **Speaker: [Dylan Ratcliffe](https://www.linkedin.com/in/dylanratcliffe/), Founder at Overmind** **Session Title: How We Detected Toil among 36,000 Changes** How much engineering effort is spent on work that doesn’t add real value? In this talk, Dylan shares how nearly 37,000 infrastructure changes were analysed to quantify toil, identify safe automation opportunities, and reduce manual effort using data-driven models and AI-supported approval workflows. **Speaker: [Rory Malcolm](https://www.linkedin.com/in/rory-m-m/), Product Engineer at Incident.io** **Session Title: My first year as an AI engineer** Rory walks through Incident.io’s first year building an AI capability, covering both the technical and organisational challenges of moving from early experimentation to a team able to make meaningful progress against real AI goals. **Agenda:** 18:00 — Welcome & refreshments 18:30 — Introduction - [Ethan Sumner](https://www.linkedin.com/in/ethansumner404/) 18:35 — [Dylan Ratcliffe](https://www.linkedin.com/in/dylanratcliffe/) 19:10 — Break 19:20 — [Rory Malcolm](https://www.linkedin.com/in/rory-m-m/) 19:55 — Close & networking **We are always keen to hear from:** • Speakers — demos, applied GenAI projects, engineering deep dives • Sponsors — support for venues, recording, accessibility or community initiatives • Collaborators — meetups, research groups and ecosystem partners If you’d like to speak, sponsor, or collaborate on a future session, please get in touch with **[Ethan Sumner](https://www.linkedin.com/in/ethansumner404/) via LinkedIn or Meetup**. This community forms part of the **[Community Stack ecosystem](https://www.meetup.com/pro/generative-ai-uk-community/)** and follows the **Community Stack Code of Conduct**, helping us maintain a respectful, inclusive and welcoming environment for all attendees. We look forward to seeing you in January, and for those planning ahead, the **next [GenAI UK online](https://www.meetup.com/generative-ai-uk-community/events/312728629/) event takes place on the 3rd of March**.

**BOOK HERE**: https://sportas.co.uk/games/43371 **Game Description:** Welcome to the CPBC Weekend basketball sessions! Join us this Saturday for another fantastic session, kicking off right after the youngsters and adults have finished their games. Depending on attendance, we'll be running full-court 5v5 or some high-energy 3v3. Come along to enjoy 90 minutes of great basketball, skills, and fun with a great group of players! Below are the full details: Nunhead Sports Ground St Asaph Roadd London SE4 2EA https://share.google/rHBbyqJFYAd4KDogi Facilities: \- Parking \- Changing Rooms \- Showers We can't wait to see you on the court! Rules \- 🏀 Games to 11 points or Games to 7\, depending on the numbers \(2 and 1 point\) \- ⏰⏱️Be there 10min before the start \- ⚫⚪ Bring a dark and a light top \- 🔢🔢 15 Players max \- 🔛🔄 Substitutions every 3\-4 min \- 🎤✊🏼Call your own fouls \- 🔊🍦No BS foul calling please \- 📸🎥 No unauthorised video recording

Join us at our first event of the year at [The Information Lab](https://www.theinformationlab.co.uk/) on the historic Watling Street in the City of London 🙌 We will be kicking off 2026 by delving into the topic of real-time data with our speakers - Sam, Nicoleta & Anton. We are running this event in collaboration with **[Confluent](https://www.confluent.io/)**. **6pm:** Doors Open **6:30pm:** Talks Start 🗣️The Speakers🗣️ ***Load-In to Lights-Out: Data Engineering the World's Biggest Tours and Live Events*** ***Sam Malcolm,*** ***Head of Architecture & Engineering at Centrus ([Sam's Linkedin](https://www.linkedin.com/in/sam-m-00b19a110/))*** **Sam’s** session dives into lessons from large-scale live event data systems—handling over **10 billion data points per second** for global tours like Beyoncé, Coldplay, and Glastonbury. He connects the extreme demands of real-time analytics and high-performance networking to modern cloud data practices, showing how the same principles of **speed, resilience, and precision** apply when designing reliable, scalable data platforms today. ***Should I Stream or Should I Join: From Regular to Delta Joins in Apache Flink*** ***Anton Borisov, Principal Engineer at Fresha & Nicoleta Lazar, Senior Data Engineer at Fresha ([Anton's LinkedIn](https://www.linkedin.com/in/anton-s-borisov/) , [Niloceta's LinkedIn](https://www.linkedin.com/in/nicoleta-lazar-921a6864/))*** Joins in the streaming world are where the fun stops and the tradeoffs start. State that grows forever, latency that spikes unpredictably, watermarks that never quite behave, every Flink developer has war stories about this. In this session, Anton Borisov and Nicoleta Lazar break down the join landscape in Apache Flink: → Regular joins and the state explosion problem → Interval joins: when they work, when they don't → Temporal joins and the versioned table dance → Lookup joins: the escape hatch and its hidden costs → Delta joins: the new kid and how Fluss enables them, and why it matters Talks finish by **8pm** and there will be a break between the talks. Afterwards, we may head to a pub to continue chatting. You can sign up by subscribing to this event 🚨**IMPORTANT**: Please bring a ***valid form of ID***. See you all on the 22nd January 🤩 Happy Networking 🍻 Checkout Meetup Groups run by Confluent: * https://www.meetup.com/london-real-time-data-meetup/ * https://www.meetup.com/data-streaming-europe/ By attending this event, you agree to abide by our rules of conduct: * Respect others' opinions. * Keep it appropriate - no harassment of any sort. * If you see something or have a complaint, please reach out to one of the organisers or email events@dataengineerslondon.com.

**Join Us for Brunch at Portia’s Cafe!** 🌿 Come meet fellow vegan friends and enjoy a delicious brunch with the Columbus Vegan Meetup! We’ll be gathering at **[The Cozy](https://www.google.com/viewer/place?mid=/g/12hqnx2x0&sa=X&ved=2ahUKEwj9lPzVmI6SAxXs48kDHS9NMbgQqdYPegYIAQgFEAI)** (located right next door to Portia’s Cafe) to sample a 100% vegan and gluten-free menu featuring savory wraps, breakfast favorites, hearty soups, and decadent desserts. This is a wonderful opportunity to connect with a community that shares your values while supporting a local, family-owned staple in our city. * **When:** Saturday, January 24, 2026, at 11:00 AM * **Where:** the Cozy (next to Portia’s Cafe) * **Address:** 4428 Indianola Ave, Columbus, OH 43214 We can’t wait to see you there!

Let’s meetup at Cafe Istanbul for the last day of Restaurant Week. You get three courses for $30. This is the menu: https://614now.com/rw-menu/cafeistanbul-easton

You can also join the meeting by Conference Call at (518) 263-8851.

**NEW LOCATION: Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: * 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. * 6:30 to 8:00 pm. Main meeting and presentation(s). For this first meeting of the year, we will be reviewing submissions for the [Your Program is Hideous and Obfuscated Challenge (YPHOC). ](https://docs.google.com/document/d/13zbxwElpJqPMuAN4Ele2hUgsqtFKzH3OCTL5NEeiLKQ)Submissions for this challenge are due by January 12th, 2026. The details can be found here: or on our website http://www.cohpy.org See Our [Parking Map](https://docs.google.com/presentation/d/1u2A4fLNlxwLJn0KA_hKc8bnFlFHLvsHBDh-_8wzX_tk/edit?usp=sharing) We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact centralohpython@gmail.com

Join us as we get together to get together to help those in need at this CMG Gives Back event! For this event, we’ll help prepare food, serve meals, assist residents, wash dishes and clean surfaces at Fath Mission – Grant Kitchen. We have a great little community of Movie Group friends so rather than see a movie this time, we’ll help “Create a better world” by helping serve those in need. Here are complete details and our plan for this event: FAITH MISSION – GRANT KITCHEN: The Faith Mission kitchen and dining room serves residents 3 meals a day, every day of the year. Our group will help prepare food, serve meals, assist residents in the dining room, wash dishes, and clean surfaces. PLAN: We will be preparing / serving / cleaning for BRUNCH from 10:30am to 12:30pm and have space for a total of 7 volunteers. Please arrive at 10:15am and wear closed-toe shoes and long pants. LOCATION: Faith Mission – Grant Kitchen is located at 245 N. Grant Ave. Enter the kitchen at Dock 1, indicated in the attached map. On-site and street parking are available in the surrounding area. Below are some links / attachments with additional info/details: \* LSS Volunteer Guidelines: Uploaded to photos. \* Parking Map Info: Uploaded to photos. \* LSS Faith Mission Orientation Video: https://www.youtube.com/watch?v=Bp46_6ay6iA \* Link with Additional Details / Info: https://lss.vomo.org/opportunity/faith-mission-grant-kitchen-2025 IMPORTANT REMINDER: Our group will be providing all of the volunteers on this day so a firm RSVP count is essential. Please only sign up if you are certain you’ll be able to attend. If something unavoidable comes up, please update your RSVP no later than one week prior to the event. With very few exceptions, no shows or cancelations within 1 week of the event will not be eligible for future CMG Gives Back events. I appreciate your understanding as we try to ensure the agencies have the volunteers needed to provide the essential services they provide to the vulnerable population they serve. THANK YOU: This CMG Gives Back event provides an opportunity for YOU to get involved in helping others! Benefits go well beyond the help we give to others. Volunteering provides a wide range of personal benefits, including positive effects on mental and physical health, reduced stress/depression/anxiety, increased happiness and improved purpose, life-satisfaction and personal well-being! Plus, the opportunity to get involved, connect with others and help those in need. PARTNER AGENCY: This event is hosted by Lutheran Social Services (LSS), which serves thousands of people in need each day in 27 Ohio counties by addressing the four core societal issues of food, shelter, safety and healing. LSS offers food through the LSS Food Pantries, housing and supportive services through LSS Faith Mission and LSS Faith Mission of Fairfield County homeless shelters, domestic violence services through LSS CHOICES for Victims of Domestic Violence, senior living and health care, affordable housing communities, and other services that uplift families and strengthen communities. Look forward to seeing you there, Dan

**Topic and Speaker TBD** ***Bring your laptop and expect to write some (non-AI generated) code!*** *(title subject to change)* Food and drinks will be available. **LOCATION:** 6515 Longshore Loop, Suite 300, Dublin, OH 43017 **FREE PARKING:** 6725 Longshore Street, Dublin, OH 43017