Out of interest, where'd you recommend getting a decent burrito? I used to go to Adobo on High Holborn, but as I spend less time in central and more time in east london, it seems like a little far to go.
My absolute favourite is Picante Mexican Grill near Victoria. Unfortunately it's been knocked out of commission by a flood recently and won't be back online for a couple of weeks. Not very familiar with the East London burrito scene, although I'm about to spend a lot of time there, so I need to explore it better. I've heard good things about Daddy Donkey but can't vouch for it personally.
Freebird Burritos near Liverpool St Station aren't terrible