Gee Whizz Gail,
I've been a Ltd co for twelve years. No regrets. You might want to check with our masters, but anyone can sign accounts up to 6.5million (might have changed i.e gone up, since I last looked) and as they would be your own not ones you are charging for!!
Although it can grease the wheels of course if you rely on work from a local accountant.
One potentila downside is that anyone will be able to look at your balance sheet on Comp House and get various details that you might not be disclosing currently. I would say that is a bigger deterrent than who signs them.
I'm ignoring all the tax waffle that might follow about which is best for pay as a director/self employed as unless you are earning in the higher bracket its all pretty much the "tax tail wagging the tax dog" sort of stuff.