Unusual British Tank Suit

[gunnerop]

Does anyone recognise the tank suit in the photo? I have one of these but have been unable to identify what pattern it is. The photo shows one of these suits worn by an individual in 43rd Recce Regiment.

They are of heavy khaki waterproof cotton fabric similar to the motorcyclist clothing. Stand collar, single full length front zip, single slash pocket on left breast with simple flap and no button. Slash openings for side pockets, buttoned large pocket on each thigh. Cuffs and ankles are buttoned cuffs. There are splits at the bottom outer seam on each leg to enable the suit to be pulled on over boots.

Any ideas?

Cheers

Paul