If you are going to do contract work in the IT field, you may find that many of the agencies will only deal with a limited company, and won't go near sole traders.
I would strongly advise you to use an accountant and get him to do the company set up. It should only cost a little more than buying an OTS package, and you can choose your own name and registered office (the accountant). Find a local accountant - don't bother with one of the big firms specialising in contractor/service companies.
The low salary/high dividend approach is OK, but you have to be careful - HMRC (justifiably) don't like it, and you will just draw attention to yourself. Once that happens, beware of IR35 - it's a set of rules for service companies whereby HMRC deem 95% of your gross invoicing as personal salary, and tax it as such. No expenses, no benefits in kind, no corporation tax - its all going on your income tax. There are ways of dealing with this - you'll need to do some research.
You have years of administrative fun ahead of you...