@OurSam. I see you're in Cheltenham which is just a bit further up the M5 from me. The front of my T6 was recently rebuilt following an incident and part of the bill was for recalibration of the radar which I'm told by the bodyshop (who I trust!) was a necessary part of the repair work. They used a guy who came to them to do the job and if you want his details, I can ask. I've no idea whether he was VW or an independent but, if the latter, he's probably a bit cheaper than a 'proper' VW technician and given our close(ish) proximity to each other, you might well be in his catchment area. Insurance picked up the bill so I've no idea how much it was but I think it was in the £100s rather than £10s.