That is definitely a thingummyjig. It appears to have two electric motors below, and two fuse holders above; and definitely adds atmosphere to what is now an automotive testing facility. I hope they don't remove it.

Location: Catesby Tunnel

Original line: London Extension (Great Central Railway)

Photographer: Ken Strachan

Contact photographer: Ken Strachan

Contact editor

Photosets: Great Central Railway  

Date: 09/11/2021

Image number: 80519

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