The big problem is your massive spend on SBs and prossies, rather than the mechanics. You will need to build up a bigger war chest to get a property,
I'm afraid you need to work out what is more important: Having lots of expensive paid sex or getting a house? And then have you got the discipline to be more restrained?
If you reduce that £1k a month to about £250, you can still have 2-3 punts a month, depending on whether you have 1 or 2 x 30mins meeting.
If you transfer that £1k a month that you would have spent on prossies into an ISA for 6 months, then you will have enough money for 2 years' punting and don't have to touch money in your current account.
That way, after a few months your account looks better to the mortgage adviser, you're in a better financial position and you can still maintain a decent level of punting.