Tony cheers. The car looks fantastic. I've got the same brochure and I know the main body is national grey.
I have since found out that the colour on the wings was not an AC colour but just one the original owner picked from the Belco Spectrum range to compliment the rest of the car.
I have tried all sorts of paint suppliers to see if there is a cross reference system to the old Belco colours (they went out of business in the 70's) so off to my local paint suppliers in Hastings to see if they can colour match it.
My own fault really as I caught the front wings with the engine when moving it around the bay on the crane, now need to touch in the marks/small dents. Still it might make consider a different colour for the front and rear wings later in the year when its warmer, maybe a slightly greener dark grey, who knows.
Thanks again
Gary