“Lancashire County Council have been working with GMS for many years. They currently carry out all of our Legionella Risk Assessments across our estate of 1000+ properties we manage. We are extremely happy with GMS and the services they are providing us. A reliable company who provide me with peace of mind that our buildings have been inspected in accordance with current HSE guidance. They also provide us with mechanical services and general Legionella remedial works which we are very happy with. I would highly recommend GMS Services.”
Jason O’Keeffe - 2017,
Legionella Officer – LCC
“GMS have been our preferred Legionella contractor for over 10 years. They have consistently provided us with a high level of service. This includes, Legionella Risk Assessments, Monitoring & Servicing and remedial works. The systems we have in place have been designed by GMS to suit our needs for our portfolio of properties.”
Mark Murphy - 2014,
Facilities Manager – GGHT
“GMS Services provide a first class service to a portfolio of our properties. GMS are employed on an annual basis to support our company and our schools in delivering effective water hygiene management. This involves, risk assessment, on-going monitoring and maintenance along with disinfections of water systems to ensure compliance with current guidance and legislation.”
David Loxam - 2016,
Property Manager – Property Management Company – Manchester
“GMS are my "got to" company for legionella remedial works. They have carried out some major refurb projects including tank replacements and plant refurbishment. They also carry out risk assessments on complex water systems. They have never lets me down and our clients are always impressed with the results they get from GMS when sub-contracting to them.”
Craig Johnson,
Facilities Management Professional
“Thank you for what the team did for us. A full chlorination of the boosted cold water system and tanks to 307 apartments out of hours. Extra staff turned up late in the day to give the job a push. Very impressed and so is our client Reneker. Thanks for your help.”
Andrew Moss - 2018,
MWA ECO SYSTEMS
“JCI Property Management appoint GMS to carry out all our water hygiene / water treatment related services. We manage a variety of properties including healthcare, specialist social care and hotels. GMS provide a complete package of water management that includes, risk assessment, water monitoring and reporting, consultancy, training and mechanical remedial works. It is so convenient to have a good reliable company who can cover all bases for us. We would highly recommend GMS to anyone looking for peace of mind and trust in a contractor..”
Michelle Pye - 2020,
JCI Property Management Services





With our extensive experience in Legionella Risk Assessment Services & Water Treatment Services Contact us today to find out how we can help you.
We are incredibly proud to announce that our Managing Director, Gemma Ollerton, has been shortlisted as a finalist for Wigan’s Businesswoman of the Year 2026 at the prestigious Wigan Borough Business Awards. This well-deserved recognition celebrates Gemma’s leadership, dedication and commitment to growing GMS Services Ltd into one of the UK’s leading specialists in water… Read more »
We are delighted to announce that GMS Services Ltd has been shortlisted as a finalist in not one, but two prestigious categories at the Wigan Borough Business Awards 2026. Construction Business of the Year 2026Small Business of the Year 2026 (up to £5 million turnover) Being recognised in both categories is a fantastic achievement and… Read more »
Check out what our mechanical services team can offer you. Some images of some of the projects we have delivered over the last decade. If you operate a commercial property – GMS can offer: Call outs Remedial works Repairs New installations TMV installations and replacements Commercial hot water system installations Water heaters Water tanks Booster… Read more »
Thursday 16th July was a chance to step away from the day-to-day, enjoy a fantastic curry, and spend time with a team that has achieved so much over the last 12 months followed by a day off work! What makes us most proud isn’t just the growth we’ve seen—it’s the culture that’s developed alongside it…. Read more »