The army type ambulance would be the correct type for the period when Swinditz was open for chippy flying just needs the yellow stripe,the fire cover was probably a TACR ie 6 wheeled range rover as that's what we had when we reopened Wyton. However I could be wrong on that one,may have been a MK9,but the fire vehicles would be green with the stripe also.As for the landrover,most air traffics used the SWB rovers,both hard and soft top.These would be that sexy IR green with stripes until the mid 90's when they went to hired vehicles and you could get any colour.The Wyton one in 99 was a LWB grey one.
The yellow stripe was supposed to be 2 inch wide,but when first applied,it depended on the size of brush the painters had.Got standardised early 80's when they went to the sticky lables.
That's the history lesson for today
Mick