UK based pickup repair

Hi team, can anyone recommend a UK based pickup repairer? I recently bought a 1983 Ibanez Roadstar that came with its original set of super P4s that are faulty (some unspecified issue with the treble side) and so not fitted, and I’d love to get them back in it and give it a whirl. I’m based up in Sheffield but I’m guessing I can post them to anywhere to repair. Any ideas? Thanks!