I had my son in north London, and honestly, although I had started to read the Baby Names forum while I was pregnant, it wasn't until I moved out of London to a Midlands village that I understood some of the shrieking about 'unusual names'. From baby stuff I used to go to regularly in London local Surestart, NCT group, coffee mornings, drop-in children's stuff etc I remember babies called Ace, Thiago, Ferdinand, Blessed, Malika, Adaego, Tadeusz, Diletta, Elsie-May, Willow, Soren, Bhadra (just off the top of my head). I think I once met a baby Buzz at a bus-stop with his dad, too.
Where I live now all the under-sevens seem to be called George, Harry, Louis, Amelia/Emelia (or variations like Milly or Mia), Sophie or Imogen, and there are two Harrys and two Harrisons in DS's reception class of 23.