I've had honey bees living inside a flat roof above a bedroom window for the last year. The time came that they had to go, there was a slight water leak in the roof and it didn't seem like a good idea to take the roof off with them still inside.
I had a chat with the local bee keepers association, Bedford, and they put a note out on their newsgroup with my details to see if anyone fancied a challenge, a guy called Andre offered his services and yesterday he came around to remove them.
It was an amazing operation, with surprisingly little damage to the ceiling, about an 18" square piece removed. What was truly amazing was the number of bees in there and the amount of honey comb that they had produced. Any way all now happily, well probably slightly miffed, in a temporary hive on top of the roof for today and away to a new home tonight.
If anyone in Beds or Herts has a bee issue I can thoroughly recommend this guy.
PS. The honey retrieved from them tastes a darn sight better than anything I've bought in any shop, so a plus point there too.