Question about UK license laws for USA drivers

If you're not, then you're going to be treated as an unlicensed driver and that won't be fun.

Unless of course you're 15, steal a car, get blind drunk, and nearly run down a street full of pedestrians at the same time, in which case you'll probably get a slap on the wrist and told not to be naughty again.   

Unless of course you're 15, steal a car, get blind drunk, and nearly run down a street full of pedestrians at the same time, in which case you'll probably get a slap on the wrist and told not to be naughty again.   

But you'll get some points on your license!

I got in a car wreck 6 months after arriving.   I had to show my passport with entry stamp and ticket to the local police or they were threatening to prosecute. Even though I had a U.S licence and a UK provisional and was fully insured.   I would guess you have 12 months from date of entry to the UK.