I know the seller well, bought few, I think at least 5 or so bikes from his late dad's collection. A vast one. This one was one of his favourite, he is also the author of that article on classiclightweights you linked. Amazing history behind it, there are not many around.
1947 Evelyn Hamilton
https://ebay.us/XwIPFC
Interesting article on Evelyn https://www.classiclightweights.co.uk/classic_builders/hamilton-evelyn-cyclist-and-heroine/