Leg ulcers (a long-lasting sore resulting from a break in the skin) represent a significant source of morbidity with many adverse physical, social and psychological consequences. With appropriate treatment, some ulcers heal successfully with a few weeks, however many persist for months and even years. Such lengthy treatment periods have led to the annual cost of wound treatment in the UK being estimated at £5.6 billion (Guest et.al. BMJ 2020).