Might be well worth the effort for narrow gauge stean fana to visit the Jack May Britain and Baltic thread on the Transit Forum for the few but excellent narrow gauge steam photos about half-way down on the whole thread.
And of course the Manx electric is the real queen of preserved trolley lines. A true interurban running with its 120-year old original equipment.
The Beyer Peacock 2-4-0T locomotives, on 3’6" gauge, were a significant part of the motive power of the Norwegian Railways in the early days. Norway with its mountains and cold climate would seem to be more of a test for these small locomotives than the Isle of Man. There is at least one of these locomotives preserved in Norway.