According to LASORs as long as you have a current type/class rating then the expiry of the SEP is based on the expiry of the Type /class rating
Where licence holders have been unable to renew a SEP (Land) or TMG Class Rating for a period exceeding 5 years from the date
of expiry*, they will be required to complete the following
requirements:
i) Complete the Skill Test in accordance with Appendices 1 & 3 to JAR-FCL 1.240.
ii) Pass an oral theoretical knowledge examination conducted by the Examiner as part of the Skill Test.
iii) The LST/LPC form, completed as a renewal, should be sent to CAA PLD for endorsement, together with the appropriate fee as per the Scheme of Charges.
iv) The Examiner should make no licence entry.
*Where an applicant can show that they are currently flying under the privileges of an ICAO licence, and are flying an aircraft
type/class within their UK or JAR-FCL licence, the renewal
requirements will be based on the expiry date of the rating
currently being exercised.
I read this as requiring the flight test to be done but the paperwork i.e licence can be signed by the examiner and no fee or paperwork to CAA (similar to if you wish to renew a SP IR when you hold A MP IR)
Any thoughts on this.