I've been running a fairly rubbish IT software development contracting outfit at the moment as a Limited company (for less than a year) but it's just too much hassle.  Therefore I'm starting up as a Sole Trader just doing on site support and emergency call out stuff.

Couple of questions:

1. Is there anything special I need to do to dissolve a Limited other than file the end of year accounts, pay any outstanding PAYE/corp tax and file the forms, tell companies house and close the bank account drawing the final amount to the shareholders?

2. Do I still need to register as self-employed or register the business in any way as I'm already registered as "requiring a tax return".  I'll open another account for business affairs.  Especially, do I need to register a business name?

Just to add: I am currently the accountant for both companies as well as the primary shareholder / trader.