I was in London 3 years ago, as well as York, Edinburgh (Scotland) and all around Northern Ireland.
I enjoyed London...my main complaints were that everything seemed even dirtier than downtown Toronto, the traffic was pure chaos at times, and the weather was never very good at all. Tourist attractions were top notch, and I loved how old the city felt. But the gasoline (petro for you 'Euros') was crazy expensive.
I could complain about the food, but when I was in York I had roast beef, garlic mashed potatoes and
Yorkshire Pudding with gravy. Damn was that ever good. Oh yeah, and Guinness is one strong beer. Tastes almost like asphault.
I really enjoyed Edinburgh Castle. Can't say the same about haggis

Got to see the oldest golf course in the world, St. Andrews Old Course...Beautiful...
But my favourite part of the vacation was Northern Ireland. SOOOO green. And I got to meet a lot of relatives. lol, one guy looked and sounded like a drunken Irish pirate. He was the coolest. I think he's my third cousin or something

Got to play golf in England, Scotland and Ireland.
Yeah, twas a lot of fun.