Liverpool Neon "neon sign"

This is located on an old dockside warehouse unit near Costco wholesale. It's been there for ever but I can't remember ever seeing it working.
From the look of the place, I always thought that the company had folded and the place was derelict but they do have an active website with some fairly recent projects in their gallery.
All the transformers must be inside, you can see all the cables grouping together and entering the brickwork.