Ros Clapp

Managing Director


Ros has worked in the industry since completing her MSc in Applied Geology at Cardiff University in 1996. Ros has detailed and specialist knowledge of site investigation and the drilling industry as a whole.

In 2009, Ros became Managing Director, superseding her father, after working for Jackson Drilling for 9 years.

Bore Hole Drilling

Ben Cornish


Since graduating from Cardiff University in 2012 with a BSc (Hons) in Exploration and Resource Geology, Ben has worked as a geologist in remote parts of Australia and as Engineering Geologist on geotechnical sites across the UK.

Ben joined JD in 2014 and was appointed as a Director in 2019.


John Hunt

Water Treatment Manager

John has over 17 years’ experience as a water engineer providing domestic and commercial clients solutions to their water quality issues including water softeners, low water pressure or flow, borehole and well water treatment, as well as legionella and other water harbouring bacteria.

John is responsible for management of and the day to day running of the water treatment section of the company whilst continuing to have a hands on role servicing and installing on the more technical projects.

Oliver Marshall

Contracts Manager


Ollie comes from a project management background of heating and renewables. Ollie graduated from Plymouth University in 2002 with a BSc (Hons) in Marine Biology.

Ollie is responsible for the day to day management of active projects and drill crews. He is also the office point of contact for all things ISO 9001, 14001 and 18001.