I discovered this hidden gem by pure chance when i explored the area in one of my lunch breaks. Rochelle Canteen is hidden away behind the walls of three former victorian schools on Arnold Circus in London's Shoreditch. The atmosphere, upon entering the ground, is relaxed almost tranquil. The canteen itself is situated in the old bike shed and the kitchens' size almost belies it's output. The food is distinctively modern British; run by Arnold & Henderson, a household name of britisch cuisine. The guests are local creative types so that the atmosphere is more relaxed then anything else. In the summer you can also sit outside.
The Barbican has so much to offer! From beautiful architecture, to a conservatory, amazing art, films, music and performances. It is such an exciting and relaxing place to hang out. Even if you don't have a purpose for visiting the Barbican, it's good for just having a tea with a friend.
The V and A houses a public collection of prints and drawings of every kind imagineable from old master drawings to photographs, playing cards, fashion plates and wallpapers. You have to select what you want to see from the collection http://collections.vam.ac.uk/and book in advance. The behind-the-scenes route up to the study room of v and a is a treat alone (pictured)