Steve I thought the uniform was very early , and didn't spot the lower sleeve badge , still cant see it even at 400% increase in magnification,!! Thanks for pointing out the change in type and position of speedo bracket, will check my numbers again and post But I thought the early rubber mounted bars also had the early speedo mount, mine has the fixed bars and late 1942 build date as far as I remember, Andrew. h.
There's a few images Andy showing the same ladies around this time on various Enfield's and G3's, some showing the upper sleeve insignia a lot more clearly.....
As for the early Ariel speedo bracket I think the changeover was around 1940-41, pretty early on and the parts lists would be a guide here (mine aren't accessible at present to check) but the rubber-mounted 'bars were still being fitted at Contract C11103 (early '42) - my own W/NG (XG24366) was built April '42 and rubber-mounted 'bars still fitted........though many of these were retro fitted with the later rigid-mounted 'bars and clamps.....
If you want the measurements for the speedo brackets, I can probably help. As Steve has mentioned, many bikes were retro fitted with the solid mounted handle bars, as was mine.