Aureos Capital

What Aureos Capital does

Aureos, formerly Keltbray Infrastructure Services Limited (KISL), is a UK-based integrated infrastructure services contractor that delivers turn-key solutions across rail, energy networks, highways, nuclear decommissioning and renewables. The company directly employs over 2,000 people, of whom more than 1,100 are professionally accredited technical staff. Acquired by EMK Capital in August 2024 and rebranded to Aureos in December 2024, the company operates a self-delivery model spanning design, engineering, construction and maintenance, organised around six interconnected service lines: rail infrastructure (including overhead line electrification design through the Wentworth House Rail Systems Limited subsidiary and signalling/telecoms via the Linbrooke rail business acquired in October 2024), energy network services for Distribution Network Operators (DNOs), battery energy storage systems (BESS), highways, nuclear decommissioning, and renewables infrastructure. The technology base combines deep rail systems engineering, high-voltage substation capability (up to 275kV via the November 2022 IDEC Group acquisition), and digital systems engineering supporting grid protection, control, supervision and SCADA functions.

Aureos generates revenue primarily through large project-based contracts and multi-year framework agreements with UK government bodies and regulated network operators — customers include HS2 Ltd (£856m Washwood Heath depot contract awarded May 2026 via a joint venture with Taylor Woodrow Infrastructure), Network Rail (£250m CP7 Eastern Routes Partnership Framework), National Highways (£49.8m M621 junctions scheme), Scottish Power Energy Networks, SSEN (over £1bn capital project delivery framework for central southern England), Magnox (£485m nuclear decommissioning framework across 12 sites), Pacific Green / Sheaf Energy (249 MW / 373.5 MWh BESS at Richborough with 10-year O&M), and Hitachi Energy (civil works on Dogger Bank converter stations).

Distribution is direct enterprise field sales via competitive tendering and joint ventures; contracts range from £10m individual awards to £1bn+ frameworks. The business has scaled rapidly, with FY2023 turnover of £689m (up 30% year-over-year), a record order book of £1.1bn at year-end 2023 (120% growth), and an addressable opportunity pipeline of approximately £4bn providing visibility into future earnings.

Name

Aureos Capital

Legal name

Aureos Infrastructure Services Limited

Website

https://aureos.com

Company type

Private

Founded year

2024

Operating status

Operating

Headcount range

1–10 employees

Short description

Aureos (formerly Keltbray Infrastructure Services) is a UK-based integrated infrastructure contractor delivering turn-key rail, energy, highways, nuclear decommissioning, and renewable energy projects for government clients and regulated network operators, with over 2,000 employees and a £1.5bn order book.

Ownership category

akta.pro rank

Product category

Private Equity Fund Management

NAICS

Portfolio Management and Investment Advice (523940), Securities, Commodity Contracts, and Other Financial Investments and Related Activities (523), Portfolio Management and Investment Advice (52394)

SIC

Investors, Nec (6799), Security Brokers, Dealers & Flotation Companies (6211), Investment Advice (6282)

akta.pro primary industry

Capital Markets Advisory (IPO Readiness, SPAC, ECM/DCM Advisory) (BPAHAOAL)

akta.pro secondary industries

Real Estate Capital Markets Advisory (Debt/Equity Placement, Refinancing) (BPAJANAE), Equity Capital Advisory (Private Equity Placements, Growth Capital) (BPAHAOAE), Corporate Finance & Capital Advisory (BPAHADAB), Capital Raising Advisory (Debt/Equity/Private Capital) (BPAHADAG)

Keywords

• Private equity investments
• Fund management services
• Emerging market investing
• Growth capital funding
• Alternative asset management

Headquarters

HQ city

Qingdao Shi

HQ country

China

HQ region

Asia

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales

Revenue model

1. Infrastructure Services Contracts: Revenue generated through project-based contracts and multi-year framework agreements for delivering complex infrastructure projects including rail systems, energy networks, highways, and nuclear decommissioning. Contracts range from individual project awards (£10m-£856m) to long-term frameworks exceeding £1bn in total value.
2. Professional Services: Integrated design, engineering, construction, and maintenance services delivered directly by Aureos' workforce. Revenue recognized through delivery of infrastructure projects with the company providing certainty of outcome through its self-delivery approach.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Aureos Capital is a Chinese fund management firm that provides private equity investment and fund management services across emerging markets in Asia, Africa, and Latin America. The firm deploys and manages capital for portfolio investments in these geographies, executing acquisitions such as the 2011 acquisition of Handell.

Product overview

Aureos is an infrastructure services company offering integrated, turn-key solutions across the UK's energy and transport sectors. Formerly known as Keltbray Infrastructure Services Limited (KISL), the company rebranded to Aureos in December 2024 following acquisition by EMK Capital. The portfolio comprises six interconnected service lines: Rail Infrastructure Services (including OLE design and delivery through WHRSL), Energy Network Services (distribution and transmission infrastructure), Battery Energy Storage Systems (BESS) for grid-scale energy storage, Highways Infrastructure, Nuclear Decommissioning, and Renewables Infrastructure. The company operates a self-delivery model with highly specialized engineering capabilities and predominantly directly-employed staff. Core offerings are delivered through acquired specialist businesses including IDEC Group (high voltage power engineering) and Linbrooke's rail business (signalling and telecommunications).

Differentiator

Problem solved

Functional benefit

Products and services

• Private Equity Fund Management

Quantifiable outcome

• Order book grew 120% to £1.1bn at FY2023 year-end
• +5 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Six partnerships are on record, tiered core, significant and minor.

• Taylor Woodrow InfrastructurecoreStrategic or Co-development Partner · 12 May 2026Joint venture partnership for delivery of HS2's Washwood Heath Rolling Stock Depot and Network Integrated Control Centre. The £856m contract represents the most complex and critical part of HS2 infrastructure, with Aureos providing rail systems and digital engineering capability while Taylor Woodrow provides infrastructure construction expertise.
• Sunbelt Rentals UK & IrelandcoreStrategic or Co-development Partner · 11 September 2025ISO 44001 pilot collaborative relationship focused on refining processes, driving efficiencies through joint innovation, maximising resource efficiency, and enhancing health and safety standards. Partnership includes collaboration on social impact initiatives such as overhead line training centre at HMP Highpoint prison.
• City & GuildssignificantStrategic or Co-development Partner · 21 November 2024Partnership to establish Rail School of Excellence at HMP Highpoint Prison, providing offenders with Network Rail-recognised OLEC 2 qualification. City & Guilds contributes accreditation and curriculum expertise while Aureos funds and installs overhead line equipment.
• IntertrainminorStrategic or Co-development Partner · 21 November 2024Training partner for OLEC 2 qualification delivery at the Rail School of Excellence at HMP Highpoint Prison.
• Hitachi EnergysignificantStrategic or Co-development Partner · 26 September 2022Tier-one contractor for Dogger Bank Wind Farm delivering HVDC converter stations. Keltbray/Aureos provides civil engineering works while Hitachi Energy supplies HVDC systems for the world's largest offshore wind farm.
• SSE Renewables / Equinor / Eni PlenitudesignificantStrategic or Co-development Partner · 26 September 2022Joint venture partners for Dogger Bank Wind Farm (SSE Renewables 40%, Equinor 40%, Eni Plenitude 20%). Aureos delivers civil engineering works across all three phases of the 3.6GW wind farm project.

Scale indicators7 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• Kier Group: UK-listed infrastructure services and construction group active in highways, rail, utilities, and nuclear. Competes directly with Aureos on National Highways frameworks, Network Rail, and Magnox decommissioning.
• Balfour Beatty: UK-listed tier-one infrastructure group operating across rail, highways, energy, and utilities. Direct competitor on Network Rail frameworks, HS2 enabling works, and DNO capital programmes — significantly larger but offers comparable service lines to Aureos.
• Babcock International: UK-listed engineering services group with significant nuclear decommissioning (Magnox, NDA) and rail exposure. Competes with Aureos on nuclear decommissioning frameworks and adjacent rail work.
• Skanska UK: UK arm of Swedish-listed Skanska, active in highways, rail, and energy infrastructure. Competes with Aureos on National Highways schemes and major transport infrastructure tenders.
• Morgan Sindall Group: UK-listed construction and infrastructure group with significant rail electrification, energy, and highways exposure. Comparable scale and customer base to Aureos across Network Rail and DNO frameworks.

Direct peers

• Linbrooke Services: UK rail technology and connectivity integrator pre-divestment — Aureos acquired Linbrooke's rail business in October 2024. Remaining Linbrooke activities and specialist signalling/telecoms providers in the UK rail market are direct competitors.
• M Group Services (formerly Morrison Utility Services): PE-backed UK infrastructure services platform owned by OMERS. EMK Capital's prior investment (Morrison) was the template for the Aureos acquisition; M Group is the most directly comparable peer in scale, ownership structure, and DNO/utility services focus.
• VolkerRail: Specialist UK rail infrastructure contractor owned by VolkerWessels, focused on overhead line electrification, track, and signalling. Direct overlap with Aureos' rail and OLE design business (WHRSL).
• Costain Group: UK-listed smart infrastructure solutions provider focused on energy, water, and transport. Closely comparable business model to Aureos, with similar positioning on DNO frameworks, rail (Network Rail), and integrated self-delivery for complex infrastructure projects.
• Murphy Group: Privately owned UK infrastructure contractor with strong rail, energy, and utilities presence. Similar self-delivery model and direct competition on Network Rail and DNO frameworks.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/aureos_group
• YouTubeyoutube.com/@aureos_group
• LinkedInlinkedin.com/company/aureos-capital_2

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries3 records

Funding overview

Funding rounds

Investors

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

M&A1 record

Investments43 records

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

Frequently asked questions about Aureos Capital