Brian MoF

Greetings from the Antipodes. I discovered this vehicle in a collection in Queensland, Australia recently. It is powered by a Dennis diesel engine and has a Dennis transmission. Unfortunately I wasn't able to get any other details on it at this time. It does seem to be an original product, although has probably been modified over the years. It does have an MV look, but may be converted from a Mercury tug. Does anyone here recognise it? TIA Brian in Sydney.