Oscar Onsite is the UK's Leading Authority in Cavity Wall Insulation Extraction. Head Office is based in Manchester, our specialist independant contractors are based throughout England, Scotland, Wales and Northern Ireland. When it comes to Cavity Insulation Extraction, Oscar Onsite are the No.1 firm to ensure quality and compliance is second to none. Trustmark registered as are our members. We train, assess, certiticate and monitor our member firms so that they give you the best service second to none. We provide onsite training and formal NVQ qualifications to our member firms and their staff. Oscar Onsite are members of Trustmark and the Energy Efficiency Association.