You possibly saw one of the Ivatt 2mt 2-6-0s; 46512, 46464 or 46428.
I would have thought that extending the running line in the Gobowen direction to just short of the A5 crossing would give a nice run through...
Yes; I enjoy your updates on here, please continue.
I only ever saw diesel locos on the trains, to the border only in those days.
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