Our Team

Ben House


Ben has spent all of his working life in the Asbestos Industry with over 15 years’ experience, much of which has involved the surveying & consultancy aspects of the business. Ben is BOHS P401, P402, P404 and S301 qualified and has worked hard to achieve ISO17020 & ISO17025 UKAS Accreditation for Casa Environmental Services.

Jon House


Jon has over 35 years’ experience in the Asbestos Industry and has been involved in all aspects of the trade including Asbestos Removal, Analysis, Consultancy, Training and Surveying in both land based and Marine Environments. Jon is BOHS P401, P402, P403, P404, P405 & S301 qualified.

Adrian Muttram

Technical Manager

Adrian Muttram, who is BOHS P401, 402, 403, 404 & P405 qualified, works alongside our current Quality & Technical Management team and has the day to day responsibility of ensuring Casa’s surveying and analytical services are fully compliant with it’s technical and quality procedures.

Since joining the Asbestos Industry in 2012, Adrian has proven himself to be meticulous & thorough in his approach to his work, not only as a proficient analyst & surveyor but also a competent Technical Manager.

Alistair Williamson

Consultancy Manager

As Consultancy Manager, Alistair Williamson is running CASA’s Consultancy & Training department.

Alistair has been working in the asbestos industry for over 15 years, is a fully qualified Surveyor & Analyst and has a solid and extensive background in various commercial and technical aspects of the industry.

Jacqui Ward

Bristol Branch Manager

Jacqui Ward, who is a qualified surveyor with 18 years’ experience in the asbestos industry, manages Casa’s Bristol branch & is responsible for servicing regional contracts. Jacqui has managed large scale housing frameworks, including Bristol City Council & Stroud District Council, as well as domestic clients, large construction companies & everything in between.

Jacqui is BOHS P402 qualified & has completed all relevant sections of Casa’s in-house technical training programmes.