For those in London who are interested in the Mimblewimble protocol and Grin cryptocurrency projects. Grin is the first implementation of a blockchain based on Mimblewimble. It promises simple and scalable cryptocurrency payment transactions with a high degree of privacy. The effort is 100% community funded and open source. It is yet to be launched, and is currently in active development. Visit http://grin-tech.org for more info. The aim of this group is to connect and meet with other enthusiasts of the technology, to share knowledge and exchange ideas. All interested are welcome regardless of skill level or background.