A bit of a glorified cafeteria, but a very nice one at that.
It's quite cheap to eat here and child-friendly. Grab a coffee in the Granta cafe one flight up or if you want a more expensive meal with views and table service, try the Riverside Restaurant one floor down.
Free internet terminals at the cafe upstairs and if you have a Lapwing ticket or a Raven login wifi throughout. There is a PWF workstation room upstairs too.