Crutches (Kingston KT2)

Has anyone got a pair of crutches no longer being used? Looking for your stereotypical pair that the NHS provide for injuries, as unfortunately I doubt the NHS would provide me with any in the immediate future because I've not fractured/broken any bones. I've got chronic health conditions, and my joints are not very happy currently so need to start using some sort of mobility aids, it would very much be appreciated if anyone can help out.