Business Details
50+ Years
experience
Emergency
services
Your Trusted Electrical & Mechanical Contractors in Rotherham
Established in 1919, Lilleker Bros has grown from a local electrical business to a nationally and internationally recognised electrical and mechanical engineering contracting company. With over 90 years of operational experience and management expertise spanning four decades, we specialise in delivering comprehensive mechanical and electrical installation services across industrial, commercial, and heavy industrial sectors. Our capabilities include full project management from design to commissioning, with particular expertise in the food industry, power stations, and steel works.Holding ISO 45001 certification and maintaining direct employment of all personnel ensures continuity from enquiry to project completion. Our dedicated training department guarantees compliance with the latest health and safety standards, while our export division provides engineering procurement and shipping services to global clients. With a client portfolio including Diageo, the Foreign and Commonwealth Office, and Kier, we combine traditional values with modern engineering excellence to deliver exceptional standards of workmanship.
Services
Electrical Installations
Mechanical Installations
Exports
Thermography
Design Services
Details
- Year established: 1919
Highlights and features
- We offer over 90 years of engineering contracting experience
- Our ISO 45001 certified safety management systems ensure compliance
- Dedicated in-house training department maintains industry standards
- Proven export capabilities across Europe, Middle East and Africa
- 24/7 emergency call-out service for critical situations
Associations and certifications
- ISO 45001
- OHSAS 18001
Services
Electrical Installations
Our electrical department delivers comprehensive solutions from design to commissioning. We specialise in high voltage installations up to 33KV, motor control centres, factory lighting systems, and energy monitoring solutions. Our services cover both new build and refurbishment projects across industrial and commercial sectors, including complete testing and certification to the latest IET Wiring Regulations.
Mechanical Installations
We provide full mechanical engineering solutions including heating, ventilation and air conditioning systems. Our capabilities cover piped services, boiler plant installations, renewable energy systems, and sanitary ware provision. With expertise in both new construction and refurbishment projects, we deliver tailored mechanical solutions for commercial buildings and industrial facilities.
Exports
Our export division offers complete engineering solutions worldwide. From design and procurement to packing and shipping, we handle international projects with expertise in documentation, logistics and installation. We've successfully delivered projects across Africa, Europe and the Middle East, including complete electrical and mechanical systems for power stations and industrial facilities.
Thermography
Our ITC Category 1 thermographers conduct comprehensive thermal surveys for electrical, mechanical and building diagnostics. Using ISO18436 certified equipment, we identify heat patterns to detect potential faults, improve energy efficiency, and prevent system failures. This non-contact inspection method provides cost-effective, predictive maintenance solutions for industrial and commercial clients.
Design Services
Our design department utilises advanced CAD and BIM software to create detailed electrical and mechanical drawings. With Revit MEP and AutoCAD capabilities, we provide 3D modelling and clash detection to enhance project efficiency. We support both in-house projects and external consultants with comprehensive design solutions aligned with current industry standards.
People
Mark Ralton
Director
With extensive industry experience, Mark oversees strategic direction and business development. He ensures operational excellence across all projects while maintaining the company's founding principles established in 1919.
Tim Himsworth
Finance Director
Tim manages financial operations and strategic planning. With deep knowledge of engineering contracting finance, he ensures fiscal responsibility while supporting business growth and investment in staff development.
Nick Muscroft
Electrical Contracts Manager
Nick leads electrical project delivery with technical expertise spanning decades. He ensures compliance with the latest electrical standards while managing complex installations for major industrial clients.
Simon Mcnamara
Mechanical Contracts Manager
Simon oversees mechanical engineering operations with specialist knowledge in HVAC systems and building services. He manages project delivery across commercial and industrial sectors with technical precision.
Tyle Stimpson
Electrical Contracts Manager
Tyle manages electrical contracts with focus on industrial installations. His expertise in control systems and high voltage projects ensures successful delivery of complex engineering solutions for major clients.
Questions
What electrical installation services do you offer?
We provide complete electrical solutions from design to commissioning, including high voltage installations, motor control systems, emergency lighting, and energy monitoring for industrial and commercial sectors.
Do you provide mechanical engineering services?
Yes, our mechanical department offers full building services packages including heating systems, ventilation, piped systems, and BMS controls for new builds and refurbishment projects.
Are you ISO certified?
We hold ISO 45001 certification for occupational health and safety management systems, demonstrating our commitment to maintaining the highest safety standards across all operations.
Do you work internationally?
Yes, our export department delivers projects worldwide with experience in Africa, Europe and the Middle East, providing full engineering procurement and shipping services.
What sectors do you specialise in?
We specialise in industrial and commercial sectors with particular expertise in the food industry, power stations, steel works, and healthcare facilities.
Do you offer emergency services?
Yes, we provide a 24/7 emergency call-out service for fault finding, repairs and maintenance to ensure business continuity for critical systems.
