I think some of us are struggling to understand why you want to form a limited company at this point rather than just running your business as a sole trader. The latter is relatively simple, the Ltd option not so much.
I've experienced both. Husband and I were both sole traders, then in 2007 his business profits were huge so we formed a ltd company, both directors. It was quite an effort but worth it (we thought) to keep the profits in the company, to have more pension options and reduce the liability to lose everything in the unlikely event he was sued. Fast forward 12 months to the crash and his work and income dropped, rendering the process less useful. Since then it's been easier to keep the company going until he retires - our accountant mentioned that changing back to sole trader could possibly raise flags with Revenue and prompt an audit.
I'd go sole trader route for now if I were you but it's your life.