A cracking thread chaps, brilliant photos too. I think the Marathon looks like a proper lorry, even now it would not look out of place. I have never driven one in anger on the road but was allowed to use one in the yard to shift some trailers while the driver had a brew.
There were several companies in the area ran them and I suppose they could have been fitted with three wheels and I would still have loved them. My Dad was originally an agricultural tractor salesman before taking on a pub, after the pub he was still selling things, this time the whole Leyland truck range, the area was a great market for the Reiver, Boxer, Terrier & Bison range so when he sold a Scammell Crusader or a Leyland Marathon it was a bit like how I imagine a lottery winner feels. That feeling ran throughout the whole dealership from the paint shop to the mechanics and parts department
As for the story of the buses. I used to deliver engine parts everyday to Lincolnshire Road Car workshops in Bracebridge Heath and the workshop was an amazing place for anyone with a mechanical interest like me, the buses were driven in, engines ripped out and new ones fitted, they had machines to regrind crankshafts, plane cylinder heads, machine brake drums and reupholster and refurbish double deckers to pristine condition. I wanted to move to Lincoln just so I could work there