Finally managed to find a nice location: Pret-a-Manger, upstairs. They are always empty on a Sunday, and have no objections to us playing games there. There's one long table and a few more small tables, which should be fine for a group of our size.
For fans of board games. All games welcome, from Go, Chess, Mah Jong, to Ticket to Ride, Alhambra, Settlers of Catan, to Eclipse, Battlestar Galactica, to A Few Acres of Snow, Twilight Struggle, to MtG, Netrunner. Beginners welcome (and encouraged!) We meet on the last Sunday of the month at Pre-A-Manger, in Watford.