How do I remove this?

Recently watched a Wheeler Dealer where they put a metal light bar on a D1.
they took the plastic bumper off first then bolted it to a metal one underneath that.
Dunno if that helps.
Have a good poke around underneath the front with a powerful torch.

Pft.....I gave up in the end. Looked like I had to take off the whole of the front Bumper to access the fixings. There's a plastic panel behind the bumper that would have given me access but there's no way that was coming off without removing the engine with a Chinook!! Nudge Bar is staying put!