Certified by APT Sound Testing in London - From our Clapham office in Central London, we can carry out your Thermal Insulation Testing, professionally with our efficient experienced team of thermography engineers. We can provide an excellent service to the South East area from our Clapham base, covering many areas including, Central London, North London, South London, East London, West London, Croydon, Guildford, Slough, Reading, Maidstone and Hemel Hempstead.