My mate had one on windermere many years ago. i had a look this is for windermere dont know about the others. Windermere boat registrationAll powered boats on Windermere, whether in use, moored, for private use or business must have a current Windermere Registration. This includes any boat with an outboard or electric motor or any other mechanical means of propulsion. Current fees
£20 for new registrations
£10 for a full set of self-adhesive registration numbers - postage included
£15 for registration renewals
£20 to transfer the registration into a new owner's name
£1 for a single self