Oscar Onsite are the UK’s Leading Authority in Cavity Wall Insulation Surveying & Extraction. We train indepedent contractors working in this field to compliance, processes and quality, ensuring operatives are suitably qualified to perform their tasks Cavity Wall Insulation has been installed in 17M homes across the UK, and all will be replaced over the next 10 years, so a mammoth task to lower energy bills and lower carbon footprints from heating energy Oscar Onsite – making a difference