When I worked there a few years ago there was a total of ONE towbarless tug.
It may have been ditched by now. No idea why they are not used more in Scotland.
Thinking more about it, its because stations like EDI and GLA get the dregs of the equipment. Almost all second hand, ex MAN or ex LHR.
Last edited by OntimeexceptACARS; 26th Jul 2016 at 17:05.
Reason: Edit : no i have a really good idea