I'm of Indian heritage, in my 40s. Lived most of my adult life in multicultural London, but spent a fair bit of time in very White areas (Essex, Surrey, Bucks, Scotland).
Never had any issues getting girlfriends. White girls in White areas, more diverse in London - Indian, Black, White, mixed race girls in London.
My 'hit rate' with civvie girls has always been better in London, mind.
However, my experience of dating girls in civvie life tells me that I will have no probs on seeking.com anywhere, especially in London.
I find that confidence, attitude, being fun, being yourself goes a long way.
If you come across as nervous and shy, and concerned about your looks, than girls will not be confident with you.
And it's not about the money. Of course it helps if you're not poor, own your place, don't live with mummy etc but boasting or trying to impress with money can make one appear 'bling bling flash' combined with someone who is using money as a substitute for character.