Virtual Assistant Researcher Find UK company electrical repair

My company has about 190 disc locks with built in alarms, the factory who made them have fitted the wrong electrical switch inside which breaks once someone uses it. I have the replacement switches and other parts needed to remove the existing switch and solder the new switch in place.

I have detailed instructions of how this can be done. I need someone to find a company in the UK who can carry out this fix. I would send them the goods, they would then unpack them from the original packaging fix the part and then put them back in the original packaging and send back to me.

The company would need to be able to do basic soldering and repackaging. An electrical repair centre or similar. I need quotes from 8 companies. Thanks