Good Evening, I was at Ely today and 66571 worked 6Z92 from Whitemoor Yard to Parkeston Yard this afternoon and there was a Large Crane behind the locomotive. I think it was a Balfour Beatty Machine. It wasn't a NR or Colas machine. I did look for a number, but unsuccessful.

Sorry, but I don't have perfect vision.

Apologies, but would appreciate a reply.