Contact Southern Assessors for sound insulation testing in Hampshire, Berkshire, Dorset, Berkshire, and Oxfordshire. UKAS-accredited engineers and full compliance support. Head Office Highfield House, Longparish, Hampshire, SP11 6QQ London Office 4th Floor, Silverstream House, 45 Fitzroy Street, Fitzrovia, London, W1T 6EB South West Office Henleaze Business Centre, Harbury Road, Bristol, BS9 4PN