Hi mate,
Just started a business myself so think I may be able to answer a few questions as I asked all the same to 3 different accountants.
If you are not clearing £20k + a year profit, you will lose out going ltd due to increased costs
going ltd in the current climate does not give you any extra security as to liability as most (all) creditors will require a guarantor meaning your just as liable, to many were bitten by company liquidating and losing money in the process.
A ltd company is a separate entity so the company itself pays corporation tax, then you pay tax on your earnings that you draw from the company, so you'll lose out.
You'd be better of losing the money in other ways, than throwing it at the tax man and your accountant. Why don't you consider taking on an apprentice, you can pay him whatever and you'll be doing a young lad a favour at the same time, not to mention someone to pass you a few tools?
Or failing that, you could pay someone like your misses to do your bookkeeping or something else legitimate, or a family member that may give you it back at a later date etc?