Bar Douro has to be one of the most under-rated restaurants in London. Granted, without a reservation it's still tricky to get a table here without waiting (at the very long bar, resplendent in hand painted blue and white Portuguese tiles). When you do get a stool to perch on for the evening, the quality of the traditional local Portuguese food is really something to write home about. It offers a series of small plates, divided into Garden, Sea and Land. I'd recommend the octopus with sweet potato (above); the garlic prawns and the pork 'Alentejana' with clams. If you're after something more hearty, why not order a whole suckling pig (price available on request, of course).
You'll find it in Flat Iron Square, which, if you've not yet been, will be a revelation in itself. A foodie complex near to Bankside and Borough Market, it sits under seven railway arches and in the Grade II listed building Devonshire House, with seven food vendors, three restaurants, four street food trucks, five bars and a live music and entertainment venue. It's one of those places you leave thinking, "how did I not know this was here?? I will be coming here every night this summer!"