Can anyone point me in the direction of a UK based supplier of a Gopro to screw mount suitable for bike lights, M6 thread etc? Something to bolt through to fit a bike light to a go pro mount. I've found some but they are very canadian and let you collect for the local set of stores. I have a Garmin under mount and would love to fit the light below that and out of the way. Thanks.
You need to speak with my mate. He'll sort you out - even with a custom design if needed. I use one of his light mounts that work with a helmet gopro mount and so does everybody else that rides in our group. Drop him a message and he'll fix you up no problem.
I've bought one from this guy on eBay -
I think he will more or less make anything, look at his other items if that one isn't right for you.