14A on French Church Street. Service is a bit weird but its nice sitting outside.
Toasted sandwiches are 4e in the Roundy. Think they finish about 4pm though.
Bodega is good. don't get the fish cakes if you're hungry though. they're a bit miserable. lovely staff and good burgers though.
On Thursdays and Fridays there's the food market in the garden off Paul St. The one directly opposite the back of Waterstones. Get the beef burrito. Think its 5e or 5.50 but its delicious. I think its there for most of the day.