@Zebb
I have suffered with this for years.
I have a friend in France and she recommended Jouvence Gelee Ultra Fresh and sent me some. It was incredibly soothing and cooling and really helped. (
https://www.cocooncenter.co.uk/jouv...SiHSmpbi4-hclCnlMG2GzBFxOQPon37prHKIKLUc-0ZS0). This was massively beneficial in getting a good nights sleep.
However, I then went to a sports massage therapist and they identified the problem to be related to very tight calf muscles. They gave my legs a good seeing to and that helped fix the problem.
It does come back now and again, funnily enough, I had it the other night. But this is often when I have been sitting at my desk for ages and not exercising. I bought a massager with a vibrating head and I run that up and down the calves, especially the sides of the lower leg to release all the tension and that will fix the problem again for ages.
Good luck with your legs.
Rob