From what I can make out:
You'll need a proficency check with a multi examiner. S/he can then sign the licence page, doesn't go to CAA. If you haven't flown 10 Route sectors in the last year you'll also need to do a nav ex as part of the proficiency check. Route sector is at least a 15 min cruise sector.
Doesn't come with an admin fee - for a change! Examiner sends form off.
But no matter how many hours you have done it would appear you require a check out.