I've got a couple of pictures at home, though probably nothing you haven't already got - I'll scan 'em tonight. Plus you can find Bramah Diplock's patents online, they're rather interesting (both his pedrail wheels and chain-tracks).
From Glanfield: 'Experimental twin-bogie Pedrail tracks, 1916, built from parts salvaged from Col Crompton's landship. His Mk I chassis and running gear would have looked like this, although 7 ft longer and with upturned ends'.
Tri-Nitro Tom Tulloch and Louis Jackson wanted to mount on it a flame-thrower provided by Capts Livens and Vincent. Wilson took it on a couple of test runs in June 1916, but it wasn't very mobile and the tracks broke easily. Later a tram-car-like body was fitted - they appear to have removed the odd rollers at each end - after which it was abandoned. This is it on Porton Down (photo from Fletcher, 'Landships'):
This is Murray Sueter's idea, which he discussed with Churchill in February 1915, for a Pedrail Landship to weigh 24 tons (the drawing, from Macksey & Batchelor's 'Tank', strongly resembles Sueter's original drawing dated 4 March 1915 which I've seen in the Stern archive but didn't have copied).