Trial of PICO Versus Standard Care in Chronic and Sub-acute Wounds

Inclusion Criteria: * Patients \>18 years old * Males and females. If female, they must not be pregnant or lactating. If female and of reproductive age, a pregnancy test will be provided. * The patient or their legal representative (if the patient is incapable of giving legal consent), is able to understand the trial and is willing to consent to the trial. * Patients with sub-acute or chronic wounds (diabetic foot ulcer, pressure ulcer, venous leg ulcer, or other chronic) suitable for treatment with a PICO dressing. * Wound duration ≤52 weeks - Amended to remove criteria. * Wound area range ≥5 cm2 at start of screening period * Wound maximum linear dimension ≤ 15cm * Able to use English for the interview Exclusion Criteria: * Patients with known allergies to product components (silicone adhesives and polyurethane films (direct contact with wound), acrylic adhesives (direct contact with skin), polyethylene fabrics and super-absorbent powders (polyacrylates) (within the dressing). * Wounds which have an infection which is not being treated with systemic antibiotics. * Wounds which are actively bleeding. * Exposure of blood vessels, organs, bone or tendon at the base of the reference wound * Exclude undermining or tunnelling present or suspected in the wound * Use of negative pressure device on wound in the last 30 days. Amended to remove criteria * Malignant wounds/malignancy in the wound * Systemic infection not being treated with systemic antibiotics * Simultaneous treatment with other experimental wound care procedures, biologics or devices * Patients with a known history of poor compliance with medical treatment. * Patients who have participated in this trial previously and who closed or were withdrawn. * Patients who are unable to understand the aims and objectives of the trial.