as far as i was told those factors don't matter... what matters is credit rating, down payment, confirmed salary, residency, being on the electoral roll, valuation of the property. i was single, with very little credit (2 yrs worth of avg credit), good confirmed salary, wasn't on the electroral roll. pretty straight forward. it gets more interesting/complicated if you're self-employed, with bad credit.
oh- another thing you might thing a sec about b/c it threw me for a loop- b/c money laundering laws you need to show them how all the deposit money came to be yours... it's not sufficient to show lump sum payments into an account in your name. it's a new law (april 05) and even my solicitor didn't know what exactly they were looking for.