You can always contact organisations such as Business Link. they help many companies start up in business and can sometimes offer grants. There are also many useful websites such as startups.co.uk (i think that is right), and forums such as www.ukbusinessforums.co.uk. You can get all sorts of help and advice on there, and maybe even some business.
Remember, once you are up and running and have some funds for marketing, you can always spend a little on
Business Gifts. There is a wide choice out there now and these little promotional products are great as customer incentives and thank you's.
Good luck in starting your own business! Also... don't forget about getting a decent website setup. Business Link would be able to help with that also.
Andy