Serendipity

What happened when the signaller tried to route one of Direct Rail Services' newly repainted class 66s into a disused bay:

The line in question is known as the West End Back Dock though another, possibly more offical, name is South Dock Siding. I have never seen a locomotive in there within the last 30 years. For many years the dock was home to a derelict van, with Buddleia growing over it and apparently out of it.