What Ancora Group does

Ancora Group is a UK-based marine engineering contractor specialising in coastal protection, port infrastructure, and offshore works delivered through an in-house specialist vessel and marine plant fleet. The group was formed in March 2025 by private equity firm Sullivan Street Partners through the integration of three complementary specialist businesses — TMS Maritime (marine and civil engineering), Hesselberg Erosion Protection (engineered hydraulic solutions for coastlines, rivers and reservoirs) and Marine Plant Hire (specialist vessels, barges and skilled operators) — and was extended in June 2026 with the acquisition of Red7Marine, a long-established (since 1999) marine engineering business headquartered in Ipswich that adds jack-up barges and capability in flood defence, offshore renewables, subsea cables and nuclear infrastructure.

The group's core technology is physical rather than digital: specialist marine plant, jack-up barges, vessels and barges for complex site access, engineered hydraulic and asphalt-based erosion protection systems, and marine civils construction capability covering quay walls, coastal structures, sea defences and inland water infrastructure. Ancora integrates design engineering, construction, installation and long-term maintenance under a single group structure, enabling it to self-deliver projects that would otherwise require multiple specialist subcontractors. Notable proprietary elements include an asphalt innovation for sea defences demonstrated at Canvey Island.

The business operates on a project-based professional services model, generating revenue through custom, quote-based engagements with no publicly disclosed pricing tiers. Customers span four primary segments — water utilities (ageing infrastructure), harbour authorities (port maintenance and coastal protection), tier-one contractors (specialist marine capabilities) and environmental agencies (climate adaptation and biodiversity engineering) — with project examples including Damen Shipyards, Offshore Shellfish Ltd, the Isles of Scilly, Appledore and Canvey Island. Ancora employs 51-100 staff and operates exclusively within the UK, with its stated ambition to become a nationwide network of self-delivering marine contractors.

Name

Ancora Group

Legal name

Ancora Group

Website

https://ancoramarine.com

Company type

Private

Founded year

2025

Operating status

Operating

Headcount range

51–100 employees

Short description

Ancora Group is a UK marine engineering contractor delivering coastal protection, port infrastructure and erosion protection through four specialist subsidiaries — TMS Maritime, Hesselberg Erosion Protection, Marine Plant Hire and Red7Marine — serving water utilities, harbour authorities, tier-one contractors and environmental agencies.

Ownership category

akta.pro rank

Product category

Marine Engineering Services

NAICS

Ship Building and Repairing (336611), Ship and Boat Building (3366)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Ship & Boat Building & Repairing (3730)

akta.pro primary industry

Port Rehabilitation, Maintenance & Asset Renewal (Repairs, Strengthening) (IMAFAJAL)

akta.pro secondary industry

Subsea & Nearshore Civil Works (Trenching, Rock Placement, Mattressing) (IMAFAJAI)

Keywords

• Marine construction services
• Coastal erosion protection
• Marine plant hire
• Port infrastructure works
• Flood defence engineering

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Supply Chain

Revenue model

1. Marine Infrastructure Project Services: Design engineering, construction, installation and maintenance services for coastal, inland water and marine environments. Revenue is project-based, generated through long-term contracts with water utilities, harbour authorities, tier-one contractors and environmental agencies. The group delivers complex multi-disciplinary projects across the UK.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Ancora Group is a UK marine engineering contractor that delivers design engineering, installation and maintenance of marine coastal and inland water infrastructure. Through four specialist subsidiaries (TMS Maritime, Hesselberg Erosion Protection, Marine Plant Hire and Red7Marine), the group provides marine civils, coastal erosion protection, quay walls, sea defences and specialist marine plant with skilled operators for projects across ports, waterways and tidal coastal environments.

Product overview

Ancora Group is an integrated marine infrastructure services platform that brings together four specialist subsidiaries under a single structure: TMS Maritime (marine and civil engineering), Hesselberg Erosion Protection (coastal and hydraulic erosion solutions), Marine Plant Hire (specialist vessels and equipment), and Red7Marine (marine engineering with jack-up barge fleet). The group provides integrated solutions across the project lifecycle, from design and engineering through construction, installation and long-term maintenance, serving UK coastlines, inland waterways, ports, and marine environments.

Differentiator

Problem solved

Functional benefit

Brands

• TMS Maritime: Marine engineering excellence. Specialists in marine and civil engineering.
• Red7Marine
• Marine Plant Hire
• Hesselberg Erosion Protection

Products and services

• TMS Maritime - Marine and Civil Engineering Marine engineering excellence delivered as specialist marine and civil engineering services for complex multi-disciplinary marine infrastructure projects across ports, waterways and tidal coastal environments. Covers quay walls, coastal structures and marine civils works.
• Hesselberg Erosion Protection - Engineered Hydraulic Solutions Advanced erosion protection services delivering engineered hydraulic solutions for coastlines, rivers and reservoirs, including proprietary asphalt innovation for sea defences and biodiversity-focused engineering such as eel passage solutions.
• Marine Plant Hire - Specialist Vessels and Equipment Specialist marine plant and skilled operator hire service providing vessels, barges and access equipment for safe and efficient project delivery at complex marine sites.
• Red7Marine - Marine Engineering with Jack-up Barge Fleet Marine infrastructure and engineering services delivered across the project lifecycle with in-house engineering, fabrication and a fleet of jack-up barges. Work spans marine civils, flood defence, offshore renewables, cables and nuclear infrastructure.
• Design and Engineering Services Technical design, specification and investigation services provided to clients across coastal, inland water and marine infrastructure projects, supporting early-stage project development.
• Construction and Installation Services Construction and installation services covering marine civils, erosion systems and coastal structures, delivered by the group's specialist subsidiaries for ports, waterways and tidal coastal environments.
• Plant and Support Services Specialist vessel, barge and site access services providing plant and skilled operators for safe and efficient delivery of complex marine projects.

Quantifiable outcome

• Over 100 years of combined specialist marine plant and civil engineering experience
• +1 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators4 records

Recent moves7 records

Expansion highlights3 records

Direct peers

• Land & Water Group: UK marine civils and environmental contractor delivering coastal defence, waterway remediation, and ecological engineering works. Directly comparable to Ancora on erosion protection, biodiversity engineering and inland/coastal water infrastructure.
• Briggs Marine: UK-based marine services group with vessel operations, marine civils and coastal engineering capabilities. Comparable to Ancora on specialist marine plant hire and project-based delivery to UK port and coastal clients.
• VolkerStevin: UK-focused marine civil engineering contractor delivering quay walls, coastal defence, flood risk and port infrastructure — directly overlapping Ancora's TMS Maritime and Red7Marine offering. Part of VolkerWessels UK, serving the same water utility, harbour authority and tier-one contractor base.
• Mackley: UK specialist marine civil engineering and coastal protection contractor working on flood defences, ports, harbours and coastal structures. Closest direct comparable to Ancora in terms of project scope, customer mix (water utilities, harbour authorities, EA) and UK-only operating footprint.

Regional players

• Vroon: Netherlands-headquartered maritime services group operating offshore support and subsea vessels in UK and European waters. Comparable to Ancora's Marine Plant Hire and Red7Marine on specialist vessel deployment for marine infrastructure projects.

Broad incumbents

• BAM Nuttall: UK civil engineering contractor with marine civils, coastal and water infrastructure capabilities. Directly comparable on quay walls, coastal defence and water utility projects but operates as part of the larger Royal BAM Group.
• Royal Boskalis Westminster: Global dredging and marine infrastructure contractor with UK operations covering port construction, coastal protection and offshore energy. Comparable on subsea civils and port rehabilitation work; significantly larger fleet and balance sheet.
• Balfour Beatty: Major UK infrastructure contractor with a substantial marine civils and coastal defence capability serving water utilities, harbour authorities and environmental agencies. Significantly larger and more diversified than Ancora, but directly comparable on quay wall, port maintenance and coastal protection project types.
• Van Oord: Dutch-headquartered global marine contractor active in UK waters on dredging, coastal defence, and offshore wind foundations. Directly comparable to Ancora on subsea civils, nearshore works and erosion protection, though at materially larger scale.

Emerging players

• Hughes Subsea Services (formerly Hughes Sub-surface): UK-based specialist subsea and marine contractor delivering cable lay, dredging, jack-up barge and nearshore civils work. Direct overlap with Ancora on specialist plant, jack-up vessels and nearshore civil works for coastal and offshore clients.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Ancora Group