I was going to post today about different types of 'rights' which might be relevant to the crafter, but I think that what I have just come across on the official IPO website is far more important.
See here: http://www.ipo.gov.uk/warning.htm
Misleading mock invoicing – letters which look 'official'. Even received by the IPO itself!
BEWARE of such attempted scams and don't respond to them.
The forms you might need to register a design, file a patent application or register a trademark, and the official fees you might need to pay, are all clearly linked on www.ipo.gov.uk
You do not need to do anything or pay anything to anyone to hold copyright OR design right on an original work of your own. Whatever anyone might try to tell you.