OWM people lead, challenge and innovate, setting new standards for critical and safe water operations through trusted relationships with our customers.


We are the go-to water partner, providing complete accountability and a dependable level of knowledge, expertise and trust.

OWM people Russell Caldwell

Russell Caldwell WMSoc (Snr)

Technical Director

OWM’s founder Russell has nearly 30yrs of experience in the water management sector, over a decade of which has been as our technical authority. Russell has been working to raise the profile and importance afforded drinking water in the Oil & Gas and Marine industry. He has established a reputation as a driver of improvements in the care and attention given to drinking water across the sector. Alongside his team, Russell will continue to build the widening portfolio of services and solutions we serve to the market.

OWM people Neill Crone

Neill Crone MA (Hons) ACMA

General Manager

Neill joined OWM in May 2015 bringing his enthusiasm for business and processes to the team. His background is in banking, then financial control in shipbuilding and marine supply. This diverse range of experience is invaluable to OWM as we continue grow and improve our offering to an expanding client base locally and internationally. Neill is committed to ensuring that OWM continue maximise its impact in the industry and serve to the best of our ability.

OWM people Paul Fieldhouse

Paul Fieldhouse

Engineering Manager

Paul is uniquely placed in the industry; he holds specialist hands-on knowledge of offshore drinking water systems onboard rigs, platforms, FPSOs and PSVs. Paul has been at OWM since 2012, during which time we have remediated, replaced and optimised multiple systems. The engineering team brings best practice from onshore and implements this for our clients, globally. Paul has knowledge of a whole market on which to draw technological applications and he has created partnerships with key suppliers.

Innes web

Innes Jamieson

Sampling Manager

Innes is the “air traffic controller” of OWMs day-to-day operations. We have sampling taking place in multiple sites daily all over the world, logistical coordination and data management is critical. Innes applies his practical knowledge gained from many years of attending sites to keep the wheels turning on the operations and is often consulting clients daily on their results and what actions need to be taken. Innes joined OWM in 2012 and is another highly experienced team member.

OWM people Chris Parfree

Chris Parfree

Technical Support Manager

Chris joined the team in 2011, his studies in environmental and marine chemistry as well working in large-scale laboratories has positioned him perfectly to support our clients. He has experience in working offshore and abroad, applying this knowledge to the unique complexities of the environments in which our clients operate. This exclusive on-the-ground experience of operational realities is one of the reasons OWM are trusted by so many as the primary solution supplier for drinking water issues.


Chris Redgrave MSc

Global Sales Manager

Chris enlisted with us in October 2020 – he started his career working offshore and has had nearly 20years experience as a sales executive thereafter. This understanding of the offshore environment gives him an appreciation of the criticality of the work we conduct offshore for those drinking the water. He is passionate about raising the profile of the work OWM do to all those who need us, and ensuring we add value at every opportunity.

Neil Morton Lloyd web

Neil Morton Lloyd BSc (Hons) MIIRSM

Auditor and Trainer

Neil is OWM’s most frequent flyer and is usually found on a client site, rig, platform or FPSO in far flung locations. It is Neil’s role to audit and risk assess our client sites. He has been doing this since 2017 and prior to this was an environmental consultant in the Oil & Gas sector. He brings lessons learned from this practical on-site experience to lead our training program in classrooms onshore and offshore.

Ruth web

Ruth Awa BSc, MSc, PhD

Finance Manager

Ruth joined the team in early 2016 and is an experienced Assistant Accountant. Her eye for detail ensures that we are always running smoothly. During her time with us Ruth has implemented many improvements to our procedures and processes.


Kara Milne

Project Coordinator

Kara joined the team in May 2020, she has brought her sector specific project and process experience to OWM which is vital to the smooth running of the busy and growing Engineering Team. Kara has a post graduate certificate in Project Management from RGU and is an ISO9001 Internal Auditor. As OWM continue to extend our scopes this solid project controls base is invaluable.

Martin web

Martin Bruce BSc

Sampling Technician

Martin joined us in early 2018, bringing with him many years of experience in environmental research with the James Hutton Institute. This scientific knowledge is vital to the success of the rigorous sampling practices here at OWM. His hardworking and positive attitude makes him a perfect member of the team for the varied nature of the work we do. Martin is most likely found in a UK port serving onboard a client vessel.

Antonio web

Antonio Castellano MSc

Sampling Technician

Antonio joined the team in 2019. He is perfectly placed to add value for our clients through many years of academic and field study in Environmental Management, which gives him the ability to advise clients with challenges in remote environments. His methodical approach to his work plays in integral part of our service delivery. He splits his time between vessels, onshore sites and the office.