What Sureline does

Sureline is a UK-based private manufacturer and installer of electrical distribution modules serving marinas, inland waterways, and caravan parks. The company designs and builds the 'SEM' (Sureline Electrical Module) product range — five core module types (SEM1 through SEM5) that can be combined or deployed individually to deliver power outlets (16/32 Amp single-phase and 63 Amp three-phase), lighting, water services, TV/telephone, and metering infrastructure. Modules use die-cast LM6M aluminium enclosures with IP44/IP65/IP67 ratings, Crabtree Starbreaker 63A 30mA RCDs, polycarbonate inspection windows, and photocell-controlled lighting, engineered specifically to resist corrosion in harsh marine environments.

The company's go-to-market is direct enterprise sales, providing turnkey solutions that span product design, manufacture, installation, NICEIC testing and certification, PAT testing, and ongoing maintenance/service packages. Pricing is quote-based with quantity discounts negotiated on volume, and revenue is generated through one-time hardware sales, professional installation services, and recurring maintenance contracts on the installed base. Primary customers are marina operators across the UK; secondary segments include caravan park operators and inland waterway authorities.

Sureline has been operating for over 30 years and states that some installed products have remained in continuous service for that period. Its project portfolio includes more than 50 named marina installations across the UK (Brighton, Chichester, Mercury, Torquay, Port Solent, Cobbs Quay, Salterns, Hamble Point, and others) and international sites in Ireland, Portugal, Dubai, Bahrain, Oman, the USA, and the Caribbean. The company is privately held with no disclosed external investment, no published financial figures, and is headquartered in Eastleigh, Hampshire.

Name

Sureline

Legal name

Sureline

Website

https://sureline-em.co.uk

Company type

Private

Founded year

1992

Operating status

Operating

Headcount range

1–10 employees

Short description

Sureline is a UK-based private manufacturer and installer of modular electrical distribution systems (SEM1–SEM5) for marinas, inland waterways, and caravan parks, supplying design, manufacture, installation, NICEIC certification, and maintenance services to enterprise operators primarily in the UK with select international projects.

Ownership category

akta.pro rank

Product category

Marine Electrical Distribution Equipment

NAICS

Switchgear and Switchboard Apparatus Manufacturing (335313), Wiring Device Manufacturing (33593), Electrical Equipment Manufacturing (33531)

SIC

Switchgear & Switchboard Apparatus (3613), Electric Lighting & Wiring Equipment (3640), Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Electrical Engineering & Power Distribution (Generation, Switchboards, Cabling, Lighting) (IMAJAGAF)

akta.pro secondary industries

Wiring Devices & Receptacles (switches, sockets, plugs, industrial outlets, pin & sleeve) (IMAGAEAF), Engineering design services (line design, substation design, civil/structural) (EUADAKAG), Flexible Cords, Portable Power & Cord Sets (IMADAMAI)

Keywords

• Marine electrical equipment
• Marina power pedestals
• Caravan park hookups
• Outdoor power distribution
• Pontoon electrical modules

Headquarters

HQ city

Eastleigh

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Electrical Module Sales: Sale of electrical distribution modules (SEM1-SEM5), pedestal sockets, water stands, spare parts, and component units including MCBs, RCDs, lighting fixtures, and neon indicators.
2. Installation Services: Full-service installation including system design, CAD drawings, lighting layouts, site installation, NICEIC testing and certification, PAT testing, and commissioning.
3. Maintenance and Servicing: Ongoing maintenance packages, breakdown support, and servicing for installed electrical systems.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Sureline designs, manufactures, and installs a modular range of outdoor electrical distribution modules (the SEM series) that deliver power outlets, lighting, metering, and water services for marinas, inland waterways, and caravan parks. Offerings range from individual pedestal sockets and spare parts to complete turnkey electrical systems, complemented by in-house design, installation, NICEIC testing and certification, and ongoing maintenance services.

Product overview

Sureline offers a modular electrical system architecture called the 'SEM' (Sureline Electrical Module) range for marinas, inland waterways, and caravan parks. The product portfolio consists of five core module types: SEM1 and SEM2 remote pedestal sockets (compact outlets positioned close to boats/caravans), SEM3 and SEM4 low-level modules (lighting-only and combined lighting/power units), and SEM5 high-level modules (full-featured lighting and power units with base units). These modules can be used in combination or individually tailored to client requirements, providing power outlets, lighting, metering, TV/telephone outlets, and water services. The product line also includes spare parts including RCD units, MCBs, IP-rated sockets (16/32 Amp in IP44 and IP67 variants), neon indicators, photocells, light fittings, and module inspection windows in various configurations.

Differentiator

Problem solved

Functional benefit

Brands

• SEM (Sureline Electrical Module): The 'SEM' range of modules includes SEM1 (Remote socket), SEM2 (Remote socket with optional meter), SEM3 (Lighting only module), SEM4 (Lighting and power module), and SEM5 (High level lighting and power module). These modules can be used in combination to provide power outlets, lighting, TV/telephone outlets, water services, and metering for marinas and caravan parks.

Named customers12 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators2 records

Recent moves3 records

Expansion highlights3 records

Direct peers

• Rolec Services: UK-based manufacturer of electrical hookups, pedestals, and service modules for marinas, caravan parks, and EV charging; closest direct competitor to Sureline's SEM range with overlapping product offerings and customer base across UK leisure marine and holiday park markets.
• Bals Elektrotechnik: German manufacturer of CEE-type industrial plugs, sockets, and power distribution systems for caravanning, camping, and marine applications; a continental European peer offering IP-rated connection products overlapping Sureline's spare-parts catalogue.
• Mennekes Elektrotechnik: Leading manufacturer of industrial plugs, sockets (IP44/IP67), and CEE connectors that Sureline sources from and competes with at the component level for marina and outdoor electrical installations.
• Seijsener: Specialist supplier of marina utility pedestals and water/power service modules across Northern Europe; competes with Sureline on multi-utility pontoon services for yacht harbours.
• Hubbell Marine / Marinco: Hubbell's marina-focused brand supplying shore power inlets, cords, pedestals, and electrical accessories to the global marina market; directly comparable as a specialist in marine-rated electrical distribution products.

Emerging players

• Smart Yacht AB / FloatSys: Emerging providers of smart marina utility monitoring and remote-metering solutions; competitively positioned in the connected/IOT upgrade pathway that could complement or displace legacy pedestal-only suppliers like Sureline.

Broad incumbents

• Schneider Electric: Global electrical equipment incumbent spanning distribution panels, RCDs, MCBs, and smart metering; overlaps with Sureline's switchgear and metering content and could enter marina specialty at scale.
• Eaton (Marina Power & Lighting): US-headquartered broad-line electrical equipment incumbent with a dedicated marina power and lighting product line; much larger scale than Sureline, offering integrated pedestal systems to North American and international marina operators.

Regional players

• CET Wire & Cable / Marina Power Poles: US-focussed manufacturer and installer of marina power pedestals and lighting; a geographic peer that competes in the North American segment Sureline has historically supplied via project work.

Others

• CEF (City Electrical Factors) Marine Sector: UK-wide electrical wholesaler serving marine contractors and installers; adjacent rather than directly competitive, but a key distribution channel and indirect competitor through installer relationships.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/sureline-electrical-modules-ltd-

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

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

M&A

Investments

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

Frequently asked questions about Sureline