MMP Marine Services

Commercial Diving Services

We are an HSE-registered diving contractor capable of operating in all conditions, including fresh and contaminated water. Our experienced dive teams are equipped to handle a wide range of underwater tasks, from inspections and NDT to thermal lance cutting, welding, debris removal, and valve installation or replacement — all while upholding an outstanding safety record.

As proud members of the Association of Diving Contractors (ADC), our commitment to industry best practices is strengthened, ensuring enhanced compliance, safety, and professionalism across every project.

Our commercial diving services include:

  • Underwater repairs, concreting, and welding

  • Valve removal and replacement

  • Supply and installation of limpet cofferdams

  • Primary and secondary isolation plate design, fabrication, and installation

  • Sheet piling

  • Inspection and detailed reporting with 3D modelling

  • Dock, river, and harbour wall repairs

  • Installation of scour protection

  • Lock gate removal, replacement, and repairs

Person scuba diving underwater, holding onto a rope with bubbles rising above.
Three workers in safety gear conducting underwater maintenance or inspection on a water intake pipe at a waterway, with a body of water and trees in the background.
Two workers in safety gear, including helmets and gloves, working on a boat near the water. One is kneeling in the water, and the other is standing on the boat, handling ropes and equipment. Ships and a distant building are visible in the background.
A person in safety gear jumping off a boat into a body of water, with a person in safety clothing nearby. The image has a black-and-white background with the individual in jumpsuit and the supporting person in color.

Marine Construction

At MMP, our fully equipped in-house fabrication department allows us to design and build a wide range of bespoke components, including isolation plates, flange plates, pipe pullers, mesh flooring and hand railing. This integrated capability ensures we can support complex construction and maintenance projects across both underground and underwater environments with precision and efficiency.

Our specialist services include:

  • Commercial diving in sewage and contaminated water

  • Projects at nuclear and electric power stations, including inlet and outlet structures

  • Rock armouring and scour protection

  • Seabed clearance, debris removal, and levelling

  • Custom in-house design and fabrication

  • Reservoir modification, repair, and maintenance

A large, heavy metal manhole cover with a central bar, located in an underground sewer or tunnel, surrounded by concrete walls.
A 3D model of a mechanical or electronic component, featuring a round orange base with green and yellow structural parts and green screw indicators, set against a dark background.
Construction site with wooden frame and black plastic liner for a pond or water feature, surrounded by brick and concrete edging.
3D model of a scientific or engineering device with a circular yellow component, blue support structures, and green, red, and yellow pivot points, set against a gray background.

Safety Boat Services

Engaged in daily activities involving reservoirs, rivers, and coastal outfalls, our MMP safety boat operators possess extensive expertise and proficiency in carrying out operational responsibilities on the water.

We provide both short- and long-term safety boat rentals, complete with skilled operators, VHF radio, fuel, and a boat trailer.

Additionally, we offer the rental and assembly of customized modular pontoons. This package includes mooring ropes, anchors, handrails, cleats, and ladders.

A rescue worker in orange safety gear and another person in a life jacket and helmet in the water near a docked structure, with a boat in the foreground and a gray sky.
Black inflatable boat with a person wearing a blue helmet, floating on water near a pier with an overcast sky.

Reservoir Bed Mapping & Contouring

We offer a range of underwater survey techniques these include reservoir sonar bed mapping, contouring, down scan sonar mapping and commercial dive surveys.

Ideal for locating outfalls/inlets, raised pipework, submerged culverts, debris and silt mounds.

Our sonar mapping can operate under live conditions with real time data analysis, the images can be overlayed to digital mapping software allowing for accurate longitude and latitude coordinates. Ideal for locating pipe work in preparation for dive surveys, repairs or marker buoy placement.

Close-up of a waveform graph displayed on a screen, showing peaks and valleys consistent with audio or signal data.
A helicopter flying over a desert landscape with sand dunes.
Workers in orange safety gear and helmets on a floating platform with a small boat nearby, in a large body of water under a partly cloudy sky.

Testimonial 

“Working with the team from MMP was a pleasure from start to finish. Very professional and knowledgeable throughout the process from planning to execution. And standard of safety and workmanship on the day of install showed they were the right people for the job. Look forward to future works when MMPs expertise is needed again”

Mike Clegg Contracts Manager | Morrison Water Services
The image features the phrase 'CIVIL RIGHTS' with a red lion emblem in place of the letter 'L'.
Certification badge for ISO 45001 Health & Safety Management, issued by UKAS Management Systems, with a logo featuring a checkmark in a circle and a crown, and the serial number 8289.
Certification badge indicating ISO 9001 Quality Management, issued by UKAS Management Systems, with a logo featuring a crown and checkmark, alongside the logos of the British Assessment Bureau, featuring a stylized design in blue, red, and black.
Logo of the Association of Diving Contractors (ADC) featuring a stylized diving mask and the text 'ADC' and 'Association of Diving Contractors'.
The logo of HSE, featuring a stylized lion's face in maroon with black stripes.
Logo of The British Dam Society featuring a stylized dam illustration.