Old Rolex Service, Clean and Valuation - North East??

[airsafari87]

Unfortunately my grandfather passed away a few weeks and I have been left his Rolex Air King.

From what I can gather it is 40+ years old and was worn fairly regularly by Grandfather.

I do plan on wearing the watch, thankfully our wrist sizes appear to have been similar so I have no fitting issues.

What I would like to do is get it serviced and cleaned as well as valued for insurance purposes etc ...

Can anyone recommend a good independent or chain (Northern Goldsmiths?) that could carry this out for me?
Cost is not issue, I just want it to go to somebody who is trustworthy and will carry out everything that is required to the highest standard.

Thanks,