Thanks everyone, I will look into the mentioned repairers soon but will appreciate any more additions to those mentioned. I am discovering that although film based analogue photography appears to be more appreciated now after the rapid progress of digital technology however the older mechanical technologies are harder to get serviced due to many technicians are retired and or retiring.
This is not just a concern shared by myself but many others who own or aspire to own classic mechanical cameras such as Leica, Rolleiflex, Hasselblads etc and in my experience progressive Hasselblad camera bodies began to use internal materials for construction that deteriorate after a few decades whereas even older models seem more resilient to the material degragation. Many technicians and camera owners have expressed concern that this could be perceived as built in obsolescence and or a poor choice of cheaper materials which is a very questionable course of action.