Thanks, I've looked on Amazon and e-bay but have not found any suitable. I have an expandable Bagster from a previous bike but the fitting is way too big to go on the Ten!
I believe the 'Cross-R', 'Tweetie' and 'City Trail' have the right fitting. I know they discontinued the last one a couple of years ago. Hoping someone might still have one surplus......?
Just have to keep looking!!