Mona – North Wales Engineering Company

Engineering & Specialist Welding

Mona Engineering is part of the Mona Group of companies; together providing lifting, cranes, engineering and industrial blast cleaning and coatings.

The Mona Group was established in 2005, the company has grown steadily each year and we now employ 25 full time staff and occupy a purpose-built 17,000 square foot facility in Llangefni, Anglesey.

We provide our expert design, engineering, fabrication services across North Wales and further afield across the whole of the UK, and boast an impressive client base including:

  • First Hydro
  • Magnox
  • Magellan Aerospace
  • Costain
  • Kier
  • Amey
  • Welsh Slate
  • Stena
  • National Grid
  • Local authorities including Gwynedd, Ynys Môn, Conwy and Denbighshire

Quality & Commitment

Our success is based firmly on our core principles of quality, safety and service and our continual efforts to ensure complete customer satisfaction. Our company management systems are accredited to ISO-9001-2008 and BSEN1090-1 2009, we are members of the BSI, and we are backed by £1M professional indemnity insurance.


As a company we care passionately about the environment and we are committed to minimising our environmental impact. We have implemented policies and invested in equipment to reduce our energy usage and work to decrease waste and increase recycling in all our processes. We are currently implementing an ISO14001-2004 environmental policy.

Staff & Community

We employ 25 full time staff at our base in Llangefni, Anglesey. We invest heavily in staff training programmes and all our site employees hold a CCNSG safety passport or equivalent and are trained in confined space working and working at height. We are also committed to our staff’s health and wellbeing and provide health and safety equipment over and above statutory requirements and annual health monitoring for all employees.

Mona Engineering is a company at the heart of its community and we are proud to sponsor a number of local sports groups and community projects.

You can read more about our history and our environmental policies and community work on our corporate web site.