There was a very good reason for going limited a few years ago. Gordon Brown dropped a clanger when he decided to allow limited companies not to have to pay tax on the first 10,000 profit. The idea was to get all little people like us to join, so we would have to register all our details, accounts etc in the public domain where the government could more easily keep tabs on us all.
I, like thousands of others, joined up on the advice of my accountant. In the first year I saved thousands in tax. Brilliant
The next year GB realised he had shot himself in the foot, and took away the tax concession. Like many thousands of others, I immediately de-registered and went back to being a sole trader.
Apart from image (how much is that worth to you?) the only advantage of being limited is that if you have a lot of finance and you go broke, they can only claim against the value of the business, your home etc is safe.
The downside is that all your details including turnover, profit etc are available to anyone who wants them.