The People Behind the Work
Meet the Team
Martyn Quinn
Managing Director
Jamie McIntyre
Managing Director
Graeme Stewart
Project Engineer
Commercial Electrical Contractors — Scotland & UK
Specialist electrical contractors delivering high-quality commercial fit-outs, shopfitting and reactive maintenance across Scotland and the UK.
Mainphase Electrical was founded by Martyn Quinn and Jamie McIntyre in 2023 with a clear goal — to bring a higher standard of electrical contracting to the commercial sector. Built on a good reputation as electricians with excellent hands-on experience across a large variety of contracts and working sectors, we've grown from delivering local projects in Scotland to completing electrical installations across the UK. Today we work alongside some of the country's leading contractors and organisations, with a portfolio spanning retail rollouts, education, and commercial fit-outs.
Our mission is simple — to deliver electrical installations that are safe, compliant and built to last, on time and within budget every time. We believe every client deserves clear communication, professional workmanship and a contractor they can trust. Whether it's a single reactive callout or a multi-year framework, we bring the same level of commitment and attention to detail to every job we take on.
From the moment we receive an enquiry, we follow a structured and transparent process. We begin with drawing reviews, site surveys and risk assessments before a single cable is run. Throughout the project, dedicated site supervisors and weekly management visits keep everything on track. At handover, clients receive full documentation and certification.
Full electrical installations for new build and refurbished commercial spaces. From first fix to final commissioning, complete turnkey solutions on time and on budget.
Retail and hospitality electrical installations — full rewires, structured IT cabling, fire alarms, audio systems and feature lighting delivered to strict programme timelines.
Design and installation of LED lighting systems across commercial, education and public sector buildings. Significant experience in large-scale school and office rollouts.
DB upgrades, LV distribution boards, RCBO and SPD protection. Compliant, documented and certified to current standards across all commercial environments.
Rapid response reactive callouts, weekday and weekend. Engineers dispatched swiftly with full job reporting and invoicing only after client sign-off.
Commercial EICRs, emergency lighting testing, fire alarm installation and servicing, and EV charger installations. Full documentation and certificates on handover.
Design and installation of Cat6a structured cabling systems, containment, communications panels and node room upgrades. Delivered across live commercial, education and healthcare environments.
Based at EH20 Business Centre in Loanhead, we work primarily with larger contractors and have built a strong reputation among high-end clients. Our rigorous process — from drawing reviews and site surveys through to seamless handovers and full O&M documentation — sets us apart.
Reactive and project-based electrical services across primary schools, Edinburgh city centre buildings and the University of Glasgow. LED upgrades, DB relocations and annual statutory testing.
Over 70 full electrical shopfitting installations across the UK. Complete rewiring, structured IT cabling, fire alarms and audio systems delivered across Edinburgh, Glasgow, Manchester, Birmingham and London.
Three-year Cat6a cabling upgrade framework across different campuses. Comms room refurbishments and phased delivery in live environments.
Don't just take our word for it — here's what the clients and contractors we work alongside have to say about Mainphase Electrical.
Mainphase Electrical Ltd, led by directors Martyn Quinn and Jamie McIntyre, have consistently delivered an exceptional level of service and support across our Greggs new build and refurbishment fit out projects. Their professionalism, reliability, and attention to detail make them a trusted and valued electrical contractor. The team always works proactively to ensure projects are completed safely, efficiently, and to a very high standard. I would highly recommend Mainphase Electrical Ltd to anyone looking for a dependable and quality-focused electrical partner.
AKP recently engaged Mainphase on a number of projects and were impressed with their professionalism, technical knowledge, and quality of workmanship throughout. Their team communicated well, worked safely and efficiently on site, and consistently delivered works to a high standard while maintaining programme requirements. They were proactive in resolving issues, coordinated effectively with other trades, and demonstrated a strong understanding of working within live and occupied environments. The standard of installation and attention to detail was excellent, and all works were completed in a professional manner. We would have no hesitation in recommending Mainphase and look forward to working with them again on future projects.
Our accreditations and memberships reflect our commitment to the highest standards of safety, quality and professionalism in everything we do.
Mainphase Electrical is an NICEIC Approved Contractor — the UK's leading electrical contracting certification body. This means our work is independently assessed to ensure full compliance with BS 7671 wiring regulations and the highest standards of electrical safety.
We hold Platinum membership with Constructionline, the UK's leading procurement and supply chain management service. Platinum status is the highest tier available and demonstrates that Mainphase meets rigorous standards across health & safety, financial standing and business practices.
Mainphase is accredited by Alcumus SafeContractor, one of the most widely recognised health and safety accreditation schemes in the UK. This certification gives our clients confidence that we operate to rigorous health and safety standards on every site we work on.
Mainphase Electrical is proud to be part of the Hibernian Community Foundation Partnership. We are committed to giving back to the communities we work in, and this partnership reflects our values as a business that cares about more than just the bottom line.
Get the full picture on Mainphase Electrical — our services, featured projects, team and contact details. Everything you need to decide if we're the right partner for your next project.
We're always looking for skilled, motivated electricians and support staff to join our growing team. Whether you're an experienced commercial electrician or looking to develop your career, we'd love to hear from you.
Experienced commercial electricians for fit-out and shopfitting projects across Scotland and the UK. 18th Edition required, JIB Gold Card preferred.
Approved electricians for reactive maintenance and planned works within our frameworks. Experience in commercial environments essential.
No suitable role listed? We accept speculative applications. Upload your CV and tell us what you're looking for — we'll be in touch if a suitable opportunity arises.
Application received.
Thanks for getting in touch. We'll review your details and be in touch within 5 working days.
Ready to discuss your next commercial fit-out or shopfitting project? Get in touch for a free, no-obligation quote. We work across Scotland and the UK.