Just in case anyone is interested. Called a switch easy drive.
Weighs about 9.7kg and folds with seat attached facing backwards.
Should be available in the UK.
Like a pliko switch, but has solid handle and one wheel at each corner instead of two.
Video here:
www.facebook.com/video/video.php?v=482302672224
Peg Perego are connected to Mamas and Papas somehow. My switch chassis is labelled Peg Perego.