Another + for Richard at Glencoyne and I am sure he would be happy to help, although I would offer him a 'consulting fee'. Where is the vehicle? If it's south of Norwich I am also happy to help...without a consulting fee!

If you look at the taxed status section if it's MOT exempt there will be a green panel reading "No Results Returned" which means it's ok.
With the red warning in the MOT section it states that the vehicle may be MOT exempt.

I have been continuing to get an annual MOT, using the MOT as a third party check.
My last MOT expired on 12 July 2024.  I plan to get another MOT.  However can I continue to drive the vehicle taking advantage of the 40 year rule or does it need an immediate MOT?
When I look at the MOT History at https://www.check-mot.service.gov.uk/ it says in red
This vehicle's MOT has expired
Note that the DVLA record correctly states that my vehicle was manufactured in 1964 and first registered on 22 September 2001.  (it was an export to the US where I bought it in 1995 and brought it back to the UK when I returned in 2001).

A white "Saint" Volvo P1800 on a suffix F registration this morning on the A342.

I had several classic cars insured with Adrian Flux, for several years. They were all covered for all the usual things, including breakdown recovery. I had a problem with my 1934 Riley special, about 170 miles from home, which required breakdown recovery. Adrian Flux flatly refused to consider breakdown recovery , the person on the phone insisting that that particular car was not included for breakdown recovery. I was left to make alternative arrangements which were costly and relied on the good nature of friends. The car WAS insured for recovery, but all AF would reimburse was the cost of fuel for the van and trailer I had to use to get the car home. Needless to say I will not be considering Adrian bl**** Flux again. Be warned.

+1 for Glencoyne Engineering run by Richard Hall based in Banham, Norfolk. He may know of a good one that's been under his care.

Norfolk Garage and Richard Hall are in LRM.

I'd say the bulkhead must be "poked" just as meticulously as the chassis. As it might even be a bigger pain to sort out. I'd also look at wiring and mechanicals, of course, if you don't plan a major overhaul. A 40+ year old Landrover is prone to have some issues unless it's been very well kept or has had previous work.
I wish you good luck with finding a helping hand, if not, maybe we could compile a little guide for you what to look for. Also, as they are quite similar, a S3 owner or even a 90/110/Defender one might be of help? You could also drive the car to a garage to have it looked at. There was the famous "Norfolk Garage" in one of them Landrover magazines, IIRC. Fake name but real mechanic (Glencoyne/R.Hall, 20miles from Norwich).

Welcome back
We have club members in the Norwich area, hopefully one of them would have a look for you

Peter

Welcome back!