For the next Cambridge meetup, on Sunday 29 April, we are taking up an opportunity to be in Amazon's new research place, just opposite Cambridge station. (This is not their Castle park centre.) That means it is ticket-only. 

The event page is at

You do need a ticket from

to get in, and there will be a list of real names on the door. Sorry if these arrangements don't suit everybody, but they come rather literally with the territory. (If it helps, just mail me.) I see the map on the Eventbrite page is a bit rubbish.