Cateye RM-1 Rear Saddle Mount Bracket

I recommend this product

Perfect problem solver for a Brompton or suppose any bike with little or no exposed seatpost.
Mounts light nice and high/ visible.
Normal seatpost mount stops you sliding the saddle all the way down so slightly bulkier folded and sooner or later you'll forget or be in a hurry-slam the saddle and break your bracket!
This is the perfect solution.

Well made and sturdy bracket. Sadly not wide enough to clamp to a Brooks B17 saddle rail. Can therefore give limted stars as not fit for my intended purpose. I have left in the spares box as may be useful one day on a different saddle.

I recommend this product

As usual cateye had a practical solution. Good quality fitted easily no fuss no issues just what I like. Installed on a Brooks B17(lower part of rails).

I recommend this product

with light sitting on the back of the saddle, no worries about saddle bag blocking the light. One installed on a Brooks C17 and another on a fizik