Had that been there.
You need to redo your MEP rating. The form is only valid for 6 months.
If you fail to send it in within the timeframe it is void. The powers that be show no mercy in this regards.
I'm afraid you'll have to do at least 1 flight plus a flight test on an MEP.
Costing you around 1,000 mark.
In my case it was 2 flights then a test.
(you also have to redo the writtem MEP paper)
1/60