CML (Construction Marine Limited)


About us

CML are a Principal Contractor, operating throughout England and Wales, delivering multidisciplinary buildings and civils projects for Network Rail and other infrastructure clients.
As an owner managed private company, CML has tailored its business to focus on the design and delivery of building and civil engineering solutions for the rail and infrastructure sector.

We have an excellent track record and take great pride in the work we do, with expertise in the reconstruction and refurbishment of buildings, structures and earthworks, specifically focused on the rail sector. CML has a breadth and depth of civil, structural and geotechnical engineering knowledge hard-won from a continuously expanding portfolio of successful projects. With a sustainable approach, focused on best value, safety and performance we undertake a range of projects from minor works to complex multi-disciplinary infrastructure projects.

Operating from our head office in Leeds, and a further 7 office and industrial facilities spread throughout England and Wales, we provide national coverage and local strength for our rail clients. Recognised as one of the leading suppliers of railway maintenance and renewals works, we are currently working in partnership with Network Rail on all Routes in England and Wales.

CML maintains a highly trained, qualified, and experienced workforce that shares a commitment to safety performance, excellence, and customer satisfaction in all aspects of its operations. Recently we launched our successful Supervisors Training Programme. This 10-day programme is aligned with our Company Objectives and Core Values whilst supporting our front-line staff to influence and drive safety and performance on site.

We have aligned our safety vision and behaviours closely with our key clients at Network Rail, ‘every one home safe, every day’ is our mantra, our adoption of the Lifesaving Rules and their embedment into our own culture, our company management systems and our company documentation demonstrate how we have embraced this.

CML recognises that the health and wellbeing of our employees is all important both in terms of employee engagement and in managing the performance, safety, and reputation of our business. We are committed to providing employees with a safe, healthy and supportive environment in which to work.
Sustainability is the cornerstone of everything we at CML do. This has brought a shift in thinking, a move towards an integrated sustainable development strategy, with a clear vision that affords real benefits to CML, our stakeholders, wider society, and the environment.

Our current work bank includes the following types of work:

  • Reconstruction and refurbishment of footbridges, overbridges and underbridges
  • Structural strengthening and repairs
  • Construction of train inspection pits, washdown slabs and depot facilities
  • Embankment and cutting slope stabilisation
  • Rock cutting slope stabilization, scaling, netting, catch fences and rock bolting
  • Retaining walls and reinforced earth structures
  • Ground improvement works
  • Scour and erosion protection
  • Down bank staging’s to house signalling equipment and REB units
  • Signal box refurbishments including works to heritage buildings
  • Platform extensions and station refurbishment works
  • Level crossing upgrades

Brockley Whins Embankment Stabilisation

A complex emergency embankment stabilisation scheme at Brockley Whins Station comprising a 15,000 tonne berm and a 13m long 9m span Multiplate Arch culvert extension.

Located 300 metres west of Brockley Whins Metro Station on the Longlands, Eaglescliffe and Newcastle Line (LEN3), a 20 metre high embankment carries Metro and Network Rail passenger and freight services between South Hylton & Newcastle Airport. At the centre of the site a twin bore masonry arch culvert (Bridge 282), carries the River Don beneath the embankment flowing northwards.

The track layout comprises of two tracks, the Up and Down lines, and due to deterioration in the track quality, a temporary speed restriction of 20mph has been imposed. The site has a long history of movement requiring various interventions over the years, including a concrete block retaining wall, sheet piles, soil nails, grouting and construction of a berm. All previous interventions had varying levels of success, but ultimately failed to halt ground movements…

Cramlington Station Footbridge Refurbishment:


Drax Embankment Stabilisation Phase 3:


Ferryboat Lane Footbridge Reconstruction:


CML Civil Engineering Degree Apprenticeship Scheme: