Its nice to see another RAF skin and it is looking good but I have a few suggestions:
I'd reduce the specularity as it looks too shiny. Maybe add some shadows behind the rear edge of the cowlings to make them stand out more. The panel lines could do with being a bit more visible.
Desert aircraft often had a lot of paint wear on the leading edge of the wings, particularly behind the props where the paint was sand blasted off. I haven't seen photos of this aircraft so I don't know if it was the case with this one, but it is something to consider.