Our Team

Our Senior Management Team

Malcolm Thornton

Malcolm Thornton


From his roots as a property developer, Malcolm experienced first-hand the need to properly preserve properties from the effects of damp and timber problems. Following this vision and his passion for business, Malcolm has worked determinedly to grow ProTen Services into a strong and successful nationwide property preservation company.  He firmly believes this could not have been achieved without a desire to succeed, his love for property and his valued employees. Malcolm does find time to relax, being an avid aviculturist preserving small finches and waxbills.

David Marshall

David Marshall

Operations Director - Northern Region

David has worked in the Preservation Industry since leaving school in 1972 and has worked continuously for ProTen for 39 years. In key management positions for the past 20 years, David’s current role includes training, seeking new business opportunities in construction remediation and taking the principal role in the Company’s Health, Safety and Welfare. His spare time is taken up being a good grandfather and a bad golfer.

Tony Rafferty

Tony Rafferty

Operations Director - South & Midlands

Tony has been with ProTen for over 25 years, starting as a Surveyor and now as Operations Director for the Southern, Midlands and South West Surveying and Contracts Department. His job involves providing management and technical support to the team and relationship management with clients and product manufacturers. Outside of work Tony loves to spend time with his family and can play a good tune on the harmonica.

Lisa Dixon

Lisa Dixon

Financial Director

Lisa has worked within finance and accounting for the last 27 years. She has been with ProTen for over 10 years heading up the Accounts Department and as mathematical genius with a love for spreadsheets, provides her financial expertise within the Senior Management Team. Out of work Lisa spends quality time with her family and has a love for travel and adventure, skiing being one of her new favourite passions.

Our Accreditations

We are true experts in our fields, but don’t just take our word for it…

“I would just like to communicate my appreciation to James’s (ProTen Surveyor) excellent customer service. I found him to be very professional and yet courteous and willing to compromise to deliver the said works in a way that was acceptable to us both. This is a rarity in customer service these days and hence I have no hesitation in recommending ProTen as a company that prides itself in Customer Excellence. Please do commend him on my behalf.”  – Homeowner, London