In general I like tourists, whatever nationality, they pour money into London, staying in our vastly overpriced hotels, buying our expensive gift-crap, paying the exorbitant fares of the black cabs... money money money, come and give us more
Also they tend to be happier than the locals - why not? they're on holiday! Meet a local and all you get is a moan, about the weather, about the govt., about anything - if they cant find anything else to moan about they'll moan about you.
But I do wish they'd look the right way when stepping off the curb. I'm always whizzing in and out of the traffic and couldn't tell you how many times I've had to stand on the brakes to miss 'em. And wont tell you how many I've hit.