The online mot history only goes back to 2005/ 2006 i think.
Any records before that dont show online.
This particular vehicle has been with the same owner since 1989. Film prop or museum piece maybe but i suspect off the road except for filming for some time. Its been tax and mot excempt since 2018 so if it was off the road from 2006 to 2018 then it wont have any online mot records at all.
www.imcdb.org
Looks like it has also been in France and crashed at some point in its life for film purposes.