Just wondering what people trade more of? US or UK stocks.

I'm not an experienced trader but from looking over the pond, it's obvious that there are more trading opportunities - especially for the day trader.

I was thinking that it might make more sense to concentrate on the US markets and ignore the UK. Obviously, this depends on one's own investing/trading style.

There's also a nice time differential, which allows a lie in in the morning before trading starts - lol.