The people are generally nice, but they do not understand or speak American.
There is little native cuisine worth trying to find, lots of good restaurants in London.
It will rain every day, it may not be fair to call it rain it is often just a mist.
The beer is warm on purpose, brings out more flavor.
Do not drive in roundabouts without all your wits about you.
And most important always look right before you step off the curb.