It turns out one of our local libraries had a copy of “Knights of the Skies”. Unfortunately it doesn’t have any photo’s showing the armour protection around the radiator.

I do recall seeing a photo of a Hurricane with the cowlings off and the armour protection on the side of the engine, but I cannot recall what reference this was. Don’t know if it has shots of the radiator too.

If anyone has a close up photo of the MkIV Radiator Armour that would be most interesting.

Thanks for the help,