When something fails, we're already moving

Around-the-clock attendance across every trade, with response times agreed to suit your sites, from London to Exeter and across South Wales.

The complete reactive service


MLG covers the full range of reactive work with its own engineers, water, electrical, heating, ventilation, doors and structural make-safe, across the estates we look after. Calls reach our own on-call team, the job goes straight to an engineer, and most are finished on the first visit. Response times are set with you rather than fixed by us: typically four hours for emergencies, 24 hours for urgent work and seven days for the rest, with tighter windows where a site needs them.

Our Reactive Services

Around-the-clock attendance

One number, reaching our own on-call team. The job is allocated to an engineer and you are told who is coming and when.

Escape of water and leaks

Traced, isolated and repaired, in occupied buildings, trading premises and plant rooms.

Electrical faults and loss of power

Fault-finding and repair by our own NICEIC-registered engineers, with certification on completion.

Heating, ventilation and plumbing failures

Restored quickly, with the underlying cause dealt with rather than patched.

Make safe, propping and securing

Structural make-safe and temporary works, plus boarding, doors and locks, including keyed-alike systems for secure premises.

Attendance on the live railway

PTS-certified operatives working in possessions and night windows.

Why Choose MLG for Reactive Maintenance?

Answered by our own people

  • Calls reach MLG’s own on-call team, not a third party
  • Response times agreed with you: typically four hours for emergencies, 24 hours for urgent, seven days for the rest, with tighter windows where a site needs them
  • The engineer is allocated and confirmed before the call is closed

Finished on the first visit

  • Engineers across roofing, mechanical and electrical, fabric and civils on the same on-call team
  • Vans stocked and engineers cleared to complete the work without booking a second visit
  • Where a part has to be ordered, the site is made safe and the return date confirmed the same day

Cleared to get on site

  • PTS-certified operatives for work on the live railway, qualified as standard
  • CSCS across site teams
  • Enhanced DBS checks where the client or the site requires them
  • Keyed-alike systems for rail and secure premises

Recent Reactive Projects

Sainsbury’s Local, Durrington – Structural Masonry Reinstatement

Structural masonry rebuilt after a vehicle collision in a live delivery yard, £36k over a four-week programme.

Kemble Station – Emergency Propping

A Christmas-period emergency call-out. Two nights of propping kept both station entrances open.

What our clients say

I’d like to take this opportunity to say a huge thank you for the work completed on the station overbridge. The quality has been excellent, and I really appreciate you going beyond the original scope by redecorating the steel columns on the span and the stairs, this has given the structure a much-improved overall finish. Delivering the works within the six-day blockade was a great achievement, and the improvements have made a noticeably long-awaited positive difference to the station. I have received nothing but positive feedback from the Station Team.


Alison Tarrant
Asset Manager (East), Great Western Railway

Just a short email to extend our thanks to your site team for the sterling work undertaken on the Cardiff Central Office Refurbishment scheme. Your staff were a credit to your company… Nothing was too much trouble, they all stringently followed our safety procedures and all had a positive, can-do attitude throughout the works. As you can see from the attached pics, it’s been some transformation!


Shaun Scannell
Works Coordination Manager, Balfour Beatty (Rail Services)

The MLG roofing team consistently combine technical expertise, reliability and genuine care for the client’s needs. Their attention to detail, proactive communication and commitment to quality make them a standout in the industry, whether it’s a minor repair or a full-scale replacement, they approach every project with professionalism and pride, and never drop their health and safety standards.


Lee Husband
Director, MAPP

I’ve engaged MLG for several large-scale roofing projects with varying challenges, and have always found them proactive and responsive. Projects are completed on time and on budget, and they’re always sensitive to the live nature of our buildings. I look forward to using them again.


Mark Essex
St Monica Trust

Well done to Andrew and the wider MLG team for all their hard work throughout the installation of the Valance. The Valance has changed the landscape of Exchange Square and is being appreciated by all.


Calmour Hill
Sub Agent, Infrastructure u{2013} Rail, Morgan Sindall

MLG are the building contractors responsible for the 10 East flood damage repair works. Both the end client and Clerk of Works were impressed with their efficiency and standard of workmanship, and equally impressed by their level of communication and organisation. As such, we have invited them back to campus to kindly provide a presentation to any interested parties concerned with building projects of varying magnitude.


Oliver Eades
Clerk of Works, University of Bath

From start to finish the team were a pleasure to work with, friendly, professional and clearly very experienced. The liquid-applied system was exactly what we needed and the finish is top-notch. The lads were respectful of the college environment, kept everything tidy and caused minimal disruption to staff and students. A brilliant job, we’d definitely recommend MLG.


Richard Huish College

So I wanted to write to you and personally thank you and your teams for the efforts over the weekend battling the elements with Storm Darragh. Please pass on my thanks to all those involved, I know it was a real team effort, and just shows what can be achieved when working together. Your support as always is really appreciated…


Adrian Freeman
Programme Director, Sisk

MLG has done a great job getting the Valance installed ahead of programme with over 95% of the works now completed.


Jack Cox
Project Manager, Infrastructure u{2013} Rail, Morgan Sindall

Just wanted to place on record that Jon was extremely helpful in turning these works around at very short notice and played a key role in helping us out of a difficult situation with NWR.


Ian Parrock
Works Delivery Manager, Sisk

Great, I will be on site. Cameron has just finished and has done a great job, as have all your team that were involved.


Oliver Richards
Regional Support Services Manager, Aspris

Thank you for the work on the tipping hall lines. In Viridor we have a scheme called Homesafe Innovation, where something is an improvement and other sites should be made aware of good progress.


Dean Hitchens
Operations Manager, Viridor

Need reactive cover?

Tell us the sites, the hours and what can't wait, we'll build the response around them.