Keep your US Xbox 360, you'll probably need to buy a UK power cord (the brick I believe is 120/240vlt), and you'll have to select a TV with HDMI or purchase a SCART to HDMI converter.
I believe as long as you use your Xbox 360 with the US Xbox LIVE (i.e. you don't setup a new account) you'll be ok. Otherwise, to play games available in the UK you'll need to purchase a UK Xbox 360 and possibly setup a UK Xbox LIVE account.
EDIT: You may be able to play your US games on your US console, but convert your US account to the UK. If you do this, some games may not convert over to the UK based on region availability. Tweet @XboxSupport your situation for a better answer.
Oh...and learn how to drive on the opposite side of the road.
Also, "tea time" doesn't necessarily mean you drink tea, it's also a reference to breakfast, lunch, or dinner with an emphasis on the latter two. So, it could refer to eating as well. Brits may offer you milk with tea, and they typically don't take as much sugar as Americans do.
Biscuits are cookies.
Crisps are potato chips & crackers.
Petrol is gas.
If you're in Scotland, water is Scotch or Whiskey.
Bonnet is the hood of the car, and a boot is the trunk.
Finally a tyre is a tire.







