What SML does

SML Limited is a privately held UK specialist electrical and mechanical services company headquartered in New Barnet, Hertfordshire, established in 1966. The firm designs, manufactures, installs and maintains specialist plant and equipment for industry and commerce, with a client base described as 'blue chip' companies. Core product capabilities include power factor correction units (fixed, automatic, de-rated, de-tuned and harmonic filter variants), inverter drives for variable-speed motor control, electronic soft starts, and electrical energy metering and monitoring equipment. Service offerings span bespoke electrical design using CAD, on-site installation with minimal-disruption project management, preventative maintenance contracts with guaranteed response times, and in-workshop manufacture and repair of control panels and motor starter panels.

The company operates a niche vertical in UK water and wastewater through a confined-space-entry trained engineering team that maintains foul and surface water pumping stations nationwide, equipped with portable gas detectors, emergency escape sets, safety harnesses and man winch apparatus. It also supplies Murco refrigerant gas leak detection systems for air conditioning plant and supports building services and manufacturing facilities with planned maintenance programmes aimed at reducing downtime. The business model is quote-based and project-driven, with no publicly disclosed pricing or contract values; revenue is generated through direct on-site service delivery, bespoke manufacturing and recurring maintenance contracts.

SML holds NICEIC accreditation (National Inspection Council for Electrical Installation Contractors) and operates exclusively within the United Kingdom. The company's operating geographies are confined to the UK market with no stated global footprint.

Name

SML

Legal name

SML Limited

Website

https://sml.ltd.uk

Company type

Private

Founded year

1966

Operating status

Operating

Headcount range

11–50 employees

Short description

SML Limited is a UK specialist electrical and mechanical services company, established in 1966, that designs, manufactures, installs and maintains power factor correction systems, motor controls, pumping stations and energy monitoring equipment for blue-chip industrial and commercial clients.

Ownership category

akta.pro rank

Headquarters

HQ city

Barnet

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Distribution channels1 record

Marketing channels1 record

Core offering

SML provides specialist electrical and associated mechanical services to industry and commerce, including the design, manufacture, installation, and maintenance of specialist plant and equipment. Core product offerings include power factor correction units, inverter drives, and electronic soft starts for motor control. Service offerings cover pumping station maintenance and repair, electrical energy monitoring, refrigerant leak detection, and full engineering services spanning design, installation, maintenance, and panel manufacturing.

Product overview

SML is a specialist electrical and associated mechanical services company established in 1966, serving industry and commerce with a portfolio of products and services. Their core product offerings include Power Factor Correction Units (fixed, automatic, de-rated, de-tuned, and harmonic filter systems), Inverter Drives for variable speed motor control, and Electronic Soft Starts for reduced starting currents. Service offerings encompass Pumping Station Services (maintenance, installation, and repair of foul and surface water pumping stations), Electrical Energy Monitoring and Refrigerant Leak Monitoring systems, and comprehensive Engineering Services including Design & Planning, Installation, Maintenance & Support, and Manufacture & Repair of control panels and motor starter panels.

Differentiator

Problem solved

Functional benefit

Products and services

• Power Factor Correction Units Custom-manufactured power factor correction units (fixed, automatic, de-rated, de-tuned, and harmonic filter systems) that improve the ratio of resistive current to total current, making electrical equipment function more efficiently, reducing current demand, and delivering up to 20% electricity bill savings with an 18-month payback. Sold to UK industrial and commercial customers facing Maximum Demand or Power Factor penalty charges.
• Pumping Station Services Specialist maintenance, installation, and repair services for both foul and surface water pumping stations throughout the UK, delivered by 'confined space entry' trained engineers equipped with portable gas detectors, emergency escape sets, safety harnesses, and man winch apparatus. Includes routine maintenance contracts, pump removal and repair, loan pump arrangements, on-site repairs, and surveying and reporting.
• Inverter Drives Variable speed control devices for motor-driven equipment that enable motors to run at optimum speeds in forward or reverse, eliminating the need for clutches and gearboxes and delivering increased efficiency and economy where varying speed or load requirements exist. SML assists with selection, sizing, application, installation, commissioning, and technical support.
• Electronic Soft Starts Motor starting and acceleration devices offering reduced starting currents and smoother extended start times for motor-driven equipment, supplied via longstanding relationships with all major manufacturers, with installation, commissioning, and ongoing technical support.
• Electrical Energy Monitoring Fixed and portable electrical metering and monitoring equipment supplied by SML for logging energy consumption and assisting in fault finding on large motor starters and distribution networks, including temporary monitoring equipment hire.
• Refrigerant Leak Monitoring Refrigerant gas leak detection equipment (Murco) supplied and installed by SML for air conditioning plant, ranging from single small chiller units to central chiller plant rooms, addressing refrigerant leak compliance and detection.
• Design and Planning Services Custom electrical system design using the latest CAD equipment to produce standard and bespoke designs for manufacturing and installation requirements, including one-to-one handover meetings, intended for manufacturing and commercial customers.
• Installation Services Electrical and mechanical installation services performed under NICEIC accreditation, delivered with customer-focused project management to minimise disruption to existing operations and meet tight deadlines.
• Maintenance and Support Services Preventative maintenance services for air conditioning, pumping industries, compressors, manufacturing, and building services, including maintenance contracts for remote stations with rotating and pumping machinery, offering guaranteed response times and standards of reporting and working to reduce down-time and increase productivity.
• Manufacture and Repair Services Manufacture of control panels and motor starter panels in fully equipped workshops using best available components, with controlled testing upon completion and witness testing prior to dispatch, alongside related repair services.

Quantifiable outcome

• 20% electricity bill savings with power factor correction equipment
• +2 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators1 record

Recent moves5 records

Direct peers

• SES Engineering Services: UK M&E contractor with strengths in off-site manufacturing of electrical containment and modular MEP assemblies. Comparable to SML on electrical design, in-house manufacture and on-site installation for commercial and industrial clients.
• TClarke: Long-established UK electrical contractor delivering design, installation and maintenance across commercial, industrial and infrastructure projects. Directly comparable to SML in scope (electrical contracting with maintenance) and UK blue chip customer base.
• Crown House Technologies: UK mechanical and electrical contractor operating as part of Laing O'Rourke, delivering engineered electrical systems including power, lighting and controls for large infrastructure. Comparable in capability and customer profile, albeit at much larger scale.
• NG Bailey: UK-based electrical and mechanical contractor serving commercial and industrial clients. Like SML, it provides design, installation and maintenance of electrical systems, including power and building services, making business model and customer overlap direct.
• Imtech (Equans UK): UK technical services and M&E contractor delivering electrical and mechanical installation and maintenance to industrial and commercial clients. Comparable to SML on services scope, customer mix and UK-only delivery model.
• Briggs & Forrester: UK mechanical and electrical contractor providing specialist building services installation and maintenance. Overlaps with SML on industrial and commercial electrical contracting, motor control and energy-focused retrofits.

Broad incumbents

• Eaton: Global power management company with strong positions in motor control, power factor correction and electrical monitoring. Competes with SML in the underlying equipment categories SML specifies and installs for industrial customers.
• Schneider Electric: Global electrical equipment and energy management major. Directly competes in the product categories SML sources and installs (variable speed drives, power factor correction, energy monitoring) but at vastly broader portfolio and global scale.
• ABB: Global leader in drives, motors and power quality products. Overlaps with SML on inverter drives, soft starters, harmonic filters and broader industrial electrification offerings across a much wider product portfolio.
• Legrand: Global specialist in electrical and digital building infrastructure. Adjacent to SML in industrial and commercial electrical distribution and monitoring products, but at much broader scope and scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/smlltd

Compliance1 record

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 SML