Hi
There are some good Honda garages that do NSX servicing and then there is Plans Motorsport who specialise in NSX servicing
Just check through the forums ... places like Norton Way are mentioned
but i dont know how far these places are away from you!
so i'm sure someone might be able to give you better information than me
If you know any really good trust worthy mechanics they can do most of the bits you have mentioned anyway. most on here that know the car well will tell you its easy worked on and the only issues can be parts prices.
Parts can be gotten from the US cheaper than HUK and Japan is also cheaper. again a wee bit of searching on the forums will help you here
remember you will be hit with customs and charges
so best having a wee look through Hondaoriginalparts.com and getting ideas on prices and weighing that up with US prices etc
Speaking to a good local honda dealer can get you some minimal discount on UK pricing too. so try them
unfortunately some of the parts you have identified are pretty expensive from HUK i.e. the water pump as and example you can get a decent saving from US
There are guys on the NSX groups on Facebook that can supply parts from US to UK
As for Kaz, go to the Blogs section and down the right hand side he has his details listed
best thing to do is email him using information provided
he is very busy ... you could have a long wait that may not suit your timescales
"The value of life can be measured by how many times you soul has been deeply stirred" - Soichiro Honda