good link never knew they existed love its simplicity and priceIn case you want to go on the cheap you can instead of the original retrofit-kit from Brompton use the solution from Spa which they invented before Brompton invented the rear frame clip:
https://www.spacycles.co.uk/m2b0s155p127/SPA-CYCLES-Brompton-Clip
It costs just 2 Pounds, so you save 25. ;-) Dead simple, works like a charm though a tiny bit less comfy as the Brompton solution and your rear frame may loose the color where it is clamped to the mainframe.
Takes 2 mins to fit and makes life so much easier - got my kit from Brilliant Bikes
Can't see how that clip works....got a pic of it installed?
YES PLEASECan't see how that clip works....got a pic of it installed?