This is completely fool-proof (email and/or text received a month & 2 weeks ahead of MOT expiry):
It works too! I have recently had reminders re. SWMBO's car):
Expired MOT = Book it in, drive it there, get a pass, enjoy...
Then set an online reminder so it doesn't expire again in future years.
Don't drive it in the meantime, unless you fancy tempting fate/mither.