A few weeks ago, I set up Lucy the Brompton with everything I believed would be needed to transform her from a multi-modal commuter into a "Short(ish) Distance Touring Bicycle That Folds".
Trying out the kit revealed a few further changes were necessary, notably a support for the Carradice saddlebag. I have an original Bagman Sport support frame but for convenience for the kind of trip we are making (including being required to take all the luggage off, fold the bike and put it into a bag while on the EuroStar trains), I decided to try the SQR system which fits to the seat post rather than to metal loops on the back of the saddle -- which isn't an option for me anyway having ditched my VeloOrange leather saddle in favour of the Selle SMP Dynamic I prefer for distances longer than a commute.
I fitted the Carradice SQR today and I think it's a winner. The system was easy to fit and will keep my Carradice Barley saddlebag away from the backs of my legs as I pedal. The metal frame also has a nylon web handle attached to the top, which will come in handy when the bag is off the bike.