Latest News

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MMS Become Fit 4 Nuclear

Mon Maintenance Services below have taken part in the Fit For Nuclear programme and benchmarked th [ ... ]

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Daniel Williams reaches the final in the NSAN Regional Apprentice (Wales) of the year awards

Daniel Williams, once again going the extra mile, has been reached the finals in the Nat [ ... ]

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Daniel Williams Wins Coleg Llandrillo/Menai Apprentic of the year

  Daniel Williams our newly Qualified Mechanical Apprentice has won the coveted Colleg menai [ ... ]

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MMS join the Gas Safe register

  Mon Maintenance Services become Commercial Gas Safe Registered. We have introduced a new s [ ... ]

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MMS Wins Judges Choice Business Award

  The Cartrefi Conwy Judges' Choice Award  went to Mon Maintenance Services Ltd, which  [ ... ]

Who are we?

Based in Holyhead, Anglesey and established in 2009, Mon Maintenance Services Ltd (MMS) is an Electrical and Mechanical Engineering Maintenance Contracting Company.

MMS offer a 'one-stop-shop' engineering maintenance service with a range of maintenance skills and trades including Mechanical Fitting, Industrial, Marine and Domestic Electrical and Welding/Fabricating to world-class standards having worked to, achieved and maintained accredited Quality, Health and Safety and Environmental management system certification..

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We come highly recommended.

With over 170 years combined experience in a wide range of disciplines and sectors of Engineering and Maintenance, we offer the full package - Mechanical, Electrical, Machining and Welding Fabrication all under one banner; cutting down on procurement time and cost. "One company, one process".

We have a proven track record and a no no-nonsense approach, getting the job done safely, right first time, with no defects and on budget.

Read what our customers say

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Company Reg No - 07020805 VAT No - 985 2600 02