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Our Services

We are one of the largest providers of electrical and mechanical installation services. We provide a variety of services for our clients from design to installation. Choose from the icons below to find out more about our services:

Our Electrical Department works closely alongside our mechanical Department offering complete Mechanical and Electrical packages as well as individual Electrical Projects. Our expertise starts with design of projects through to tender stage, procurement, installation, testing and commissioning and follow up maintenance and servicing. We offer an endless list of services in both the design and build and pre-specified sector in all areas of the industry ;- Heavy Industry

  • Installations to the Steel industry, Quarries, Power Stations and Recycling Plants.
  • High Voltage installations up to 33KV including transformers, switchgear and cabling.
  • Distribution, Sub distribution including design and manufacture of switchgear.
  • Low voltage installations to plant and machinery and associated containment.
  • Motor Control Centres and Panels.
  • Field supplies and control systems.
  • Factory Lighting and field lighting / Emergency lighting.
  • Energy Monitoring and Power Factor Correction.
  • Testing and Commissioning.


  • Installations to Warehousing, Factory Units and office blocks, both new build and refurbishment.
  • Distribution, sub distribution and associated containment.
  • Lighting and Small Power.
  • Fire Alarm, Intruder Alarm, C.C.T.V and access control.
  • External Lighting.
  • Testing and Commissioning.


  • Full Project Management from Design to Handover.
  • Electrical Condition Inspections and Reports to existing installations.
  • Emergency Lighting Inspection and Testing.
  • Energy Monitoring.
  • Portable Appliance Testing.
  • Thermal Imaging Inspections.

Our Mechanical and Plumbing Department works closely alongside our Electrical Department offering complete Mechanical and Electrical packages as well as individual Mechanical Projects. Our Mechanical and Plumbing department offers a full Building services package to our clients covering all aspects of the construction process from design through to commissioning. Our Engineers have a wide range of experience in all sectors of Construction in both New Build and Refurbishment. Sectors

  • Education
  • Health Care
  • Industrial
  • Process
  • Retail
  • Accommodation

Typical Services we cover

  • Piped Systems
  • Gas Installations
  • Comfort Cooling and Air Conditioning
  • Ventilation Handling Systems
  • Heating Systems
  • BMS and Control Systems
  • Below Ground Services
  • Boiler Plant and Plant Rooms
  • Renewable Installations
  • Sanitary Ware
  • Water Services
  • Above Ground Soil and Waste

Our focus is to help clients find solutions to design problems to create and install systems that are the most appropriate to their needs.

Our export department has the expertise and experience in delivering projects worldwide. We can offer to our clients the full service, starting with design and procurement, packing and shipping of all materials either by sea or air, we can arrange all export documentation and finally full installation, testing and commissioning. Our export client list includes; BBC World Service – Jakarta Bureau – (Project Included Mains Switchgear, Distribution Boards, A/C MCC, Studio Dado Trunkings and Emergency Lighting at a value of £55,000.00) Diageo – (Guinness Nigeria Plc) Factory in Benin – Canning Line Utilities – (Project included 11 KV transformers, MV cabling/LV mains and submains/switchgear/lighting and emergency lighting/small power and containment at a value of £505,000.00) Cadbury (Nigeria) Plc – Lagos factory – Bournvita Production Facility – (Project included design, procure, supply and install mains and submains/ switchgear/ lighting and emergency lighting/small power and containment/fire alarms at a value of £600,000.00) Foreign & Commonwealth Office, Deputy High Commission Lagos – (Project included Chiller plant, pumps, plant room pipes and lagging at a value of £350,000.00) 3CL – Refrigeration Plant in Egypt (Project included at a value of £11,000.00 ) We also provide the design, procurement, packing and shipping services to our associate company Lilleker Bros. (Nigeria) Ltd, and have done since 1974 which is still ongoing today.

Electrical Installations; Lilleker Bros Ltd offer full testing and inspection services in accordance with the 18th Edition of the IET Wiring Regulations (BS7671:2018), including but not limited to the following;

  • Electrical Installation Completion
  • Electrical Installation Condition Report
  • Minor Electrical Works
  • Emergency Lighting Completion
  • Emergency Lighting Log Book & Drawing Production
  • Emergency Lighting Condition Inspection & Reporting
  • Fire Detection and Alarm System Completion, Commissioning and Modification

All our Test Equipment is internally reference checked in-line with the NICEIC standards and requirements, and Calibrated annually with our external Approved Instrument Service House in accordance with BS EN10012:2003. Mechanical Installations; Lilleker Bros Ltd offer full Testing, Commissioning and balancing of HVAC Systems, including but not limited to the following;

  • Pressure Testing of Piped Services
  • Balancing and Commissioning of LTHW, Hot and Cold Services and Ventilation Systems
  • Chlorination of Water Services
  • Water treatment of Low Temperature Hot Water Heating and

Chilled Water Systems.

Within our Electrical and Mechanical Departments we offer planned and preventative maintenance packages within the commercial and industrial sectors. This can include electrical condition report testing, routine emergency lighting checks, PAT testing and repairs. We also offer to clients a quick response emergency call out service to all which can include fault finding, tracing cables, sourcing and diagnosis of faults on the system, lamp or fitting replacement, water ingress situations, the aim being to leave our clients in full safe working order. Our small works department provides our clients with a daywork contract with key personnel dedicated to providing this service.

Lilleker Bros Ltd are ITC Category 1 Thermographer ISO18436 PCN Certified and can offer thermal surveys across multiple applications alongside periodic inspections, for maintenance purposes or call outs;


  • Panel Inspections
  • Switchgear
  • Circuit Breakers 
  • Transformers
  • Fuses
  • Solar Panel Inspections


  • Valves
  • Pumps & Bearings
  • Insulation
  • Product Levels


  • Heat Loss & Energy Conservation
  • Flat Roof Inspections
  • Leaks and Water Ingress
  • Underfloor Heating Inspections


The benefits of thermal surveys are;

  • Non-contact inspection
  • No down time
  • Fast
  • Cost effective
  • Excellent fire prevention measure
  • Possible reduction in your insurance premium
  • Prediction of future faults
  • Non-destructive testing (BINDT)
  • Possible energy bill reductions


During a thermal inspection an infrared camera is used to detect heat patterns which are then captured and analysed in a report. This initial report can then be used in future inspections as a comparison tool to detect deterioration. Any heat detected will be colour coded against the severity criteria in the report for the client.  

Thermal surveys are used across many more applications including; process monitoring, quality control and medicine/veterinary.

Our Design Department uses the latest high quality Computer Aided Design and Drawing Software to produce fully designed Electrical and Mechanical Services drawings. Our in house Scanning and Printing facility allows us to produce full colour or black and white drawings from A3 to A0. We have developed partnerships with various external Consulting Engineers should a design and build project need to be outsourced. Our BIM journey has begun. We are working towards BIM Level 2 by March 2016 and using this capability in Business Promotion. BIM improves efficiency by using clash detection at design stage and offers our clients a 3D plan of a project. The aim is to work collaboratively with clients and suppliers alike. BIM also gives streamlined procurement for overseas contracts. Our current BIM implementation document can be viewed here. Current Software employed by the Company;

  • AutoCAD 2017
  • AutoCAD LT 2017
  • Revit MEP 2017 3D Modelling
  • Amtech Electrical Pro Design Suite 2017
  • Hevacomp Mechanical System Builder V8i

Current Scanning/Printing and Plotting Machines;

  • OCE CS 4136 A0 Scanner (2no)
  • OCE CS 2236 A0 Plotter (2no)


Call us: 01709 374073

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