There are loads of nice quirky places to eat in Canterbury, it's great I love it. But more often than not, Rob and I usually end up in Wetherspoons. It's cheep, nice and cosy, and the food could definitely be worse (the fried eggs may be rumored to come prepackaged, but at least they are free range :) )
Wetherspoons have recently changed their menu and there seem to be fewer vegetarian options, while still being good :( I wanted to try something new, especially when there are so many places to go. Canterbury is quite touristy, and eating places can be pretty expensive but there are definitely exceptions, and Canteen is a new find to add to the list.
It's nestled right next to the Cathedral at number 17 Sun Street, so it's a great place to try if you are visiting Canterbury for the sites, and want to check out the Cathedral too. If not, it's right in the city center, so pretty convenient all round.