Hello!
I've been stripping on and off for about 5 years now, and let me tell you, it's harder now than ever before to rake in the big money. Lots of clubs, lots of girls and less men visiting. So.. it is harder than ever to earn money. ?2.5k a month is not bad, but it is possible to earn much much more. I do not, nor have I ever, lived in London so you don't need to live there to do well. You can do well in Birmingham, Manchester and Edinburgh.
As was mentioned, if you earn ?4k a month, you will be in the higher tax bracket. However, it is possible to sidestep this by writing off expenses. Taxi costs are included in this, and if you work from home seeing clients, then rent/bills can be partially written off as well, and this will reduce your tax bill. You only start paying VAT if you earn more then ?80,000 a year.
I keep a budget planner and I stick to it to make sure I don't spend too much. I make sure I spend no more than x amount a month on make up, or on clothes, or on train faire. Some of my cost I can pass on to clients, such as travel or specific outfits, but you have to spend money to make money. Once you've been doing it a while you will figure out t he best way of managing money for you.
I don't do oral without condoms and it's never affected my earning.