I was at a campervan show (sad, I know). There were a couple of folding bike stands there, and one of the upmarket van sellers also was selling bromptons.

Otherwise the bikes themselves didn't impress, but I bought one of these for my DT mini and its quite good

http://folding-bikes.net/asbikes/front-bag-p-42.html

It clicks on and off easily so you can actually take it in the shop with you, and also folds very flat.