It certainly looks good. (I suspect I may have misremembered Battle of Britain and the uniform Ian McShane's character had.) I'm not sure if the straps on those flying boots would be correct in 1940. I've seen it said they were added later, when it was realised that aircrew baling out would lose their boots when the parachute opened. If that was the only mesh-level different, material grouping and transparency would cope.