Firstly, you need to make sure that you're doing the right thing...
As has been stated already, this would be a class rating renewal - but the bigger question is for what licence and what are you flying?
If its an old UK CAA PPL issued prior to JAR then the licence is still valid - but wont serve much purpose without a valid class rating on it. If its a JAR licence then by now that too will have expired and require 'trading in' for an EASA one.
If you're looking to renew your rating and attach it to an EASA licence so that you can continue to fly what is termed an EASA aircraft in the future then the process is a little more complicated than just 'booking a check ride'.
For all renewals you need training through an ATO - you cant just rock up to any old instructor and fly. Your ATO has to determine your training needs and depending on how long 'several years' is will determine what and how much training should be undertaken. FCL.740.A states the guidelines that the ATO SHOULD work to.
Once that training is complete, the ATO will issue a course completion certificate and it is then that you can approach an examiner to book a proficiency check.
The examiner, I'm sure will be aware, has to apply to the CAA for authority to undertake the flight in advance and normally wont do that without seeing a copy of the completion certificate.
IIRC the UK CAA require a valid medical and valid rating before they will renew / reissue a licence so make sure all of the appropriate paperwork is in place....including an ELP if that isn't already on your licence.
HTH
DD