Ziferblat is a co-working and events space in Shoreditch, where everything is free except time.
It has a relaxing sitting room/cafe atmosphere to hold meetings in, work on freelance projects, study, or hold an event.
There's wi-fi, newspapers, board games, a piano, record player, tea, coffee and cake. It's all free, but users pay for the time they spend at the venue instead (8p per minute, with a day rate capped at 4 hours).
Support staff are mainly volunteers who receive two hours free use of the facilities in return for one hours work.