Definitely get a business bank account it makes things so much easier!
The last I knew about getting a business bank account (may have now changed due to the recession)
They don't have to cost the earth, you can get a business bank account at the Co-op virtually free (you have to deposit several thousand in cash every month to incur charges) and can access it at any post office.
A&L offered a free one, but there are bad reports about their customer service since they were taken over.
I would highly recommend joining the Federation of Small Business, it'll cost you about £170 for your first year, £140 each year after that, that can include a free business bank account, all the legal advice you could need free of charge, discounts on credit card facilities and loads of other discounted goodies.
It's definitely worth it, I'm in my third year of being a member and it's invaluable!
*edit* oh for gods sake...just realised I posted almost exactly the same thing two months ago.
My comments still stand though!
