in clubs, asians tend to be the creepiest. normally desperate older guys. this therefore paints a bad light on a lot of other asians.
also, a lot of younger asians tend to be quite girly and weak. often had strict parents and have had to come a long way to get out of that nerdy asian stereotype. british girls often like a bad guy or at least someone confident and perhaps a bit cocky. don't often find these qualities in asian guys. they tend to come across a bit wet, needy, overly nice in a creepy way, submissive. not very attractive qualities. this is generally found in your average asian guy who probably is really nice and well brought up.
the asians that do get girls tend to be the cooler slightly roadmen types. I know one pakistani guy who is outgoing and a bit of a roadman. he isn't even that attractive but he gets a lot of girls. he's confident and acts manly. i also currently have a crush on an indian guy (i don't know if he's fully indian, it's hard to tell) who is very cool, not nerdy or wet. he's confident, popular and dresses well. again popular with girls. he's got good music taste and djs as well which i think boosts his attractiveness. but then i also know a handful of other indians/pakistanis who i would never be attracted to even though they're good looking and have good personalities. they're just not cool at all and still very much that dorky awkward brown stereotype. they're not masculine enough to be truly successful with women but they make good friends, almost like gay best friends though.
but yeah I know a lot of asians who are unsuccessful and a lot who are good with the ladies. it's less about looks and more about how cool and confident they are.
apologies if i've offended anyone. i'm actually half indian though.