There is these folk. No idea what they are like though..... https://www.jacksonplating.co.uk/dull-chrome-plating.php

Hi Ian, personally I have always used Hockley Polishing-
https://www.hockleyenterprises.co.uk/
I've always had good results from them. The dull chrome on my M20 was done back in the early nineties and it still cleans up very well.
Cheers. Mick.

email (option): 1963mickholmes@gmail.com

Hi Leon
Having had some email issues - I started to communicate with the lady there via watsapp
After this - responses were rapid & informative
She doesn’t work full time there so once I knew this & had established contact with her - I was happy with comms from there on
Br
Job

email (option): jonnyob1@googlemail.com