Yesterday was the very last day Books for Cooks, the bookshop/test kitchen on Blenheim Crescent in Notting Hill, served their famous bargain lunch (wherein customers would book well in advance for one of the three or four tables, not knowing whom the chef would be or what would be served, etc. but it would usually be good and cheap. Sometimes experimental and sometimes whipped up by a celeb chef.)
Anyway BfC will now have continuous service, cafe style and serve organic food. No reservations anymore- just pop in any time and take your chances.
(I have no affiliation whatsoever with BfC - just a periodic customer.)