there’s a tiny banh mi place on stoke newington church street. smaller than i’m used to and the meat wasn’t ‘real.’ but the flavour was nice and the roll was very crisp and fresh. also cheap at £4.50. www.banhmietc.co.uk/ i remember Keu on old street having nice but pricey versions, and the hoi-an banh mi on graham road (hackney central) being decent - you can even get grilled monk fish. (although i make better hanoi fish!)