Expired SEP Ratings
By not more than 5 years past rating expiry date
Sufficient training to take and pass the skill test, examiner completes LST/LPC form and signs rating renewal form in licence.
More than 5 years past rating expiry date
Sufficient training to take and pass the skill test, examiner completes LST/LPC form and applicant sends form to CAA. (with money)
Expired Licences
Expired JAA Licence
JAA licences are valid for 5 years and the ratings that are added e.g. SEP are valid for 2 years. If the licence has expired then so long as it is expired by less than 5 years all that is needed is a valid medical (JAA class 2 or better) then reapply to the CAA to renew it.
UK Licences
Before the UK became a JAA signatory in 2001, the UK CAA issued non-expiring licences with only ratings which had to be kept current. If your licence is a UK CAA one then only the rating needs to be renewed not the licence itself.