hi
you do not need a skippers certificate to buy or sail a boat privately in the UK
you will pay for moorings and
marinas in the UK,anchorages are usually free
if you sail to the European mainland,you will need to proove that the boat has all Vat (tax) paid
your boat will need a C.E certificate,this is a
europe wide
safety certification,all boats need this certificate in
europe even those that are built outside of the EEC