I went through my collection of photos again and could only find truck mounted cranes on a few different chassis types and these included RAF types. I would say though, that if a chassis was strong enough to take a crane it would be logical to add the odd excavator instead
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Cheers
Cliff Hutchings
aka MrRoo S.I.R.
"and on the 8th day he made trucks so that man, made on the 7th day, had shelter when woman threw him out for the night"
MrRoo says "TRUCKS ROOLE"