Chronic wounds such as venous leg ulcers and diabetic foot ulcers are increasing in prevalence and impose a significant burden on patients and the NHS alike, particularly if complications related to delayed healing occur, such as infection, cellulitis or amputation. LQD® wound spray is a new primary dressing that contains chitosan FH02™. A multicentre evaluation was carried out across four centres in the UK to determine the efficacy of LQD in promoting wound healing in patients with long-standing venous leg ulcers and diabetic foot ulcers (n=39). The evaluation found that LQD promoted wound healing in almost half of the wounds (n=18), and 15 wounds made significant progress towards healing as measured by reduced wound dimensions and an increase in the healthy wound tissue present. Two wounds remained unchanged. Patients and clinicians reported that the use of LQD had a positive impact on wound progress.