I could be wrong, but I don't believe there were too many of the ladies Lenton Sports made. This is the first time I have seen one here on the forums but, admittedly, I have not done an exhaustive search for them either. With that said, that is a very nice and unique bike. It's a highly desirable machine from my perspective.
I would consider cleaning the old hub with some kerosene, putting it in through the oil port and then draining it out and then add oil once you've flushed the hub. I have a Sturmey FW 4-speed hub on my
1950 Norman Rapide and really like the hub a lot.
BTW, don't pay rhm any mind: if you want to get rid of parts, don't send them to him. Send them to me, please!