​IAQ Consultancy Services Ltd is owned by Alan and Ian Gregory a company set up to offer high quality independent advice to owners and maintainers of Ventilation systems throughout the UK and Europe.

With over 30 years of knowledge, constantly at the forefront of the industry, we are now in the position to offer some of this knowledge in helping our customers manage their ventilation systems and contractors.

We are also proud to offer a wide variety of training courses at the National Duct Cleaning Academy.

At the NDCA bespoke training tailored to your needs is also available, in our fully equipped Academy or at your premises.

Alan Gregory

BESA Trustee, Alan has over 30 years experience within the Vent Hygiene Industry and was actively involved in the update to TR19 as well as the new BESA Competency assessment courses & ventilation hygiene apprentice scheme.

Very well respected within the industry. Ask him a question, he loves to be challenged!

Alan is the holder of all knowledge and is lead instructor at the National Duct Cleaning Academy.

Ian Gregory

Ian is the Managing Director of Independent Air Quality (IAQ) Consultancy Services Ltd. Ian has over 25 years experience in the industry at all levels, from site supervisor to Operations Director.

​Ian heads up the Vent hygiene inspection division and loves nothing better than sorting out our customers ductwork systems.

Doug Bell

Doug is the newest member of the team, LEV inspections are his forte as well as heading up our communications division.