Just want to let people know to be vigilant around Clumber. We were just having a coffee at the east end of lake when masked motorbiker & passenger scrote rode through and came back and then dragged one of our bikes off. We gave chase around Clumber … Police involved , helicopter etc and between us we found garmin 800 dumped and then later bike in hedge near A57. It all happened very quickly and I would say is a one off. But just keep an eye out. This happened at 17:00 near the coffee bar on side of lake, lots of people around. Bike is recovered with police. Thanks to all who helped, I can’t wait to look at the strava route!