GTI injectors

Not sure if this is in the right section (apologies if not) can anybody recommend somebody who can test and possibly refurbish mechanical injectors for a 1989 GTI?ideally South Wales area but any recommendations would be great.cheers all.Dan

MK1 golf GTI injectors are not serviceable. There is a section on here on how to do a spray test to see if they need replacing. I think they cost somewhere in the region of £35 each.
Andy