Welcome to the forum.
Dorset is a bit out of my area, but from what I've seen, I'd avoid TH White for maintenance.
I've owned 2 LRs maintained by them, both done to a very poor standard.
I do my own maintenance, mainly because most garages don't do the work to a standard I'd be happy with.
The FL2 isn't difficult to maintain, although it can be challenging to repair when needed.