Constant strange sensations lower left leg, combi prickly, spasmy. Could it b my tight lower back/hip click? Xrays back/whole legs all ok. Which doc next?

MRI . It sounds like it is probably a variant of a "sciatica" which is an irritation of a nerve in the back causing symptoms down the leg (although there are other possibilities as well). It is not so much you initially need to see a spine specialist, but rather probably need an MRI to establish the diagnosis, which could potentially be ordered through your primary care doctor.