Trusted across London & South East since 1998

ELECTRICAL
& RENEWABLE
ENERGY
SPECIALISTS

MAS Systems was founded in 1998 by Mark Silvester with a simple principle: do the job properly, every time. More than 25 years later, that hasn't changed. Based in Herstmonceux, East Sussex, we work across London and the South East — on everything from domestic rewires to large-scale commercial installations. Much of our work comes through referrals, which tells you everything about how we operate.

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Find out more about our Electrical Services
for your home

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Find out more about our Commercial Electrical
Installations for London & South East

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Find out more about Renewable Energy services
for both domestic and commercial properties

About Us

MAS Systems was founded in 1998 by Mark Silvester with a simple principle: do the job properly, every time. More than 25 years later, that hasn't changed.

Learn More

Case Studies

25 years of electrical installation across East Sussex and London: from single-room upgrades to full commercial fit-outs. Here's a selection of recent projects.

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Contact Us

Whether you need a quote, have a question about a specific service, or want to discuss an ongoing project, we're here to help. Get in touch today.

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Case Studies

From full domestic rewires to large-scale commercial fit-outs, every MAS Systems project is approached the same way: proper planning, qualified engineers and a clean, certified finish.

We've worked across East Sussex and London on everything from 1930s properties that needed bringing up to standard, to new-build homes, busy retail units and live manufacturing sites. The brief changes, but the standard doesn't.

Read the Case Studies

PROUD TO COLLABORATE WITH

what our clients are saying

"London Ambulance Service have worked with MAS Systems on numerous projects over the years,  they have consistently delivered exceptional service and quality workmanship. Mark and his team are professional, reliable, and always committed to getting the job done right and on time. Their expertise, attention to detail, and dedication to customer satisfaction have made them a trusted partner on every project. We are grateful for our longstanding relationship with MAS Systems and highly recommend Mark and his team to anyone looking for a dependable electrical contractor. I have no hesitation in recommending their services."

James Dunne | C.I.B.S.E. I.E.E. I.M.E. I.P.M., Building Services Manager | London Ambulance Service

what our clients are saying

"I use MAS Ltd for all of my electrical reactive work, our planned maintenance and for all our projects. They are proactive, extremely helpful , quick to respond and trustworthy. Their staff are always friendly and happy to help."

Jason Moger | Health, Safety & Facilities Manager | Challenge Packaging Ltd.

what our clients are saying

"We have been using MAS systems electricians for many years. They’ve helped us with everything from small jobs to larger projects and have been consistently reliable, responsive and a pleasure to deal with. They take the time to listen to what you need and suggest and explore options with you. They are excellent problem solvers, which is very useful when working on a very old house like ours! They take pride in their work and always leave everything clean and tidy. It is reassuring to have someone you can trust completely to give honest advice and do a great job. We wouldn’t hesitate to recommend them.

Sarah | Private Customer

what our clients are saying

We have worked with MAS on the complete design and installation of the electrical systems for our warehouse and office facilities, starting from a completely empty shell. Their work included distribution boards, three-phase installations, testing and certification. The project was delivered efficiently and on time, with excellent communication throughout. They have always been responsive, accommodating alterations and providing practical solutions whenever required.

John Walter | Technical Director | Ideal Work UK

what our clients are saying

"We use MAS for several reasons the main one is we request a price we get a clear breakdown of it they turn up when they say and carry out the install on time and in a clean efficient manner. If there are any problems along the way they are very proactive and knowledgeable about finding the right solution to move the project forward."

Sam Marshall Hill | JH Builders

what our clients are saying

"MAS are professional in every way.  They work in a professional manner and nothing is too much trouble.  Recently had a garden lamp post restored and new electrics put in – excellent job from start to finish.  Highly recommend MAS Systems Limited.

Shirley | Private Customer

what our clients are saying

"Herstmonceux Parish Council has worked with MAS Electrical Services on a number of projects to improve and maintain our public facilities and has always found them to be highly professional and reliable. Their customer service is excellent, with rapid responses to enquiries and quotation requests. They consistently deliver work to a high standard, undertaking a wide range of electrical tasks efficiently, safely, and with great attention to detail.MAS Electrical Services is a trusted contractor, and I would have no hesitation in recommending them to other organisations seeking a responsive and professional electrical service."

Clare Harrison | Clerk to Hurstmonceux Parish Council

what our clients are saying

"Having worked with MAS Systems both directly and indirectly I can say that the teams on site have always been diligent, reliable, knowledgeable and polite.  I’ve always found them very competitively priced for both tender pricing and one-off site visits.  I would highly recommend them."

Sarah Jones | Reconfigure Limited

what our clients are saying

"I was introduced to M.A.S Systems 19 years ago and have appointed them for all the electrical work we have needed since then. Including our recent move to a brand-new warehouse in 2023, where they wired the whole building and offices. Their workmanship, reliability and customer care is everything you could wish for. Their response to any issues are within hours. I would never consider using anyone else."

Stuart Hedgecock | Perfectly Green

what our clients are saying

"I’ve worked with MAS Systems for over a decade and cannot recommend them highly enough. Mark and his team are true professionals—trustworthy, dependable, and consistently delivering to the highest standard. A fantastic partner and a pleasure to work with."

George Prassas

MAS Systems Limited
Dairy Cottage
Stunts Green
Herstmonceux
East Sussex
BN27 4PN
‍
01323 833860
sales@MASSytems.net

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