what did you have to do and was it worth it?
You can't really answer that question without knowing why you are considering it.
If for example you are doing it for tax reasons you are best to speak to an accountant. You will get people on here who will tell you this, that and the other. It will either save you tax or cost you tax, only you and your accountant will know which. Offset the tax savings against the costs and hey presto you will know if it is worth it.
Ask your accountant.
There are other reasons for going Ltd, you may want to look more professional and attract bigger customers. That works in some cases not in others.
i put a similar post up a few days back.............no answers im afraid
hydro cleaners, Birmingham did it may be worth contacting him
Without going through your accounts no one can tell you if it is right for you or not. They may be able to tell you if it was right for them, but it's complicated and is suitable for some not for others.
Seek professional advice, do not decide what you want to do based on advice from window cleaners, especially ones who may not fully understand how you run your business and what your long term goals might be.
You might consider speaking to someone at the business gateway. They offer free advice and will help you set out a business plan.