Down yur in that Lunnon (here in the UK's capital city), there were, yesterday in my small garden:

Blue, Coal and Great tits all over the place
Blackbird (a youngster, systematically stripping my firethorn)
Magpie (bouncing around from the house over the back to the bay tree)
Robin (showing off his new waistcoat and trying to scare the magpie)
Sparrows (who think they're blue tits and hang off the feeder)
Crows (who were eyeing up the ivy)
Pigeon (who was hoping the blackbird would leave him some berries)
Kestrel (which although technically didn't land in my garden, was hovering over it for some time until she decided the cat was too big for lunch)

I think 10 varieties is pretty good for a small urban garden!

It may have been 11... there have been some rustlings in the ivy recently that might be a wren - I saw one there a while ago, and it's the perfect spot for a wren nest. The recent winds brought down a nest from my bay tree that I hadn't noticed previously, so anything could be living in that ivy!

LTS