About SC Duncan

Find out more about us, and meet our excellent team

About US

About SC Duncan

SC Duncan was founded in 1973 by Samuel Campbell Duncan in Stevenage Hertfordshire. Samuel started his engineering career as a design engineer for British Aerospace working on projects such as Concord and Nimrod. Upon relocating to Stevenage Samuel decided to return to the family business of Plumbing & Heating and founded SC Duncan Heating Plumbing and Electrical. This was taken over by grandson John in 2015.

Customers in the local area continually asked SC Duncan if they carried out private works for local customers – with this demand John teamed up with James Tranham to create SC Duncan Heating Plumbing and Electrical to provide Boiler Servicing, Repairs and Installations to local private Hertfordshire customers. James and John have over 40 years experience in the gas and electrical industry and understand the requirements for private customers to ensure all of your needs are met in an honest, efficient and safe way.

Our Core Values

James - Director/Owner

Leading the team is James. He has over 20 years experience in the gas and plumbing industry and has worked for some of the biggest companies in the industry. When he isn’t out surveying or meeting potential clients he can be found in our Stevenage shop watching out for the traffic wardens.

Amelia - Customer Co-Ordinator

Amelia is our friendly voice on the phone and also looks after our social media and website. Always willing to do what she can to help a customer, but beware she is an expert at chasing unpaid invoices - so you have been warned!

Kelly - Customer Co-Ordinator

Kelly ‘aka’ Rain Man because she never forgets and can remember even the most obscure job is always on hand to give you the best service possible.. Just beware when calling on a Monday as that is the day all diets start!

Colin - Lead Gas Engineer

Colin or sometimes known as Clive is our lead gas engineer. King of the 5 star review Colin can do everything from full bathrooms to single rad valves. He has a fetish for tools and if he hasn’t got it - it isn’t worth having. Colin carries out all of our larger installs and bathroom installations.

Jordan - Gas Technician

Jordan is our service and repair engineer - if it’s broken Jordan will fix it! A jedi master at boiler breakdowns with his British Gas background there isn’t much he can’t fix. He loves gas so much he came back from travelling in Australia to work with it again.

Jason - Gas Installation Engineer

Jason is the newest member of our team. Despite his youthful appearance Jason is experienced in all types of gas or plumbing installation. Neat and tidy work is his trademark and he was trained to do everything properly by Colin - as Colin will point out regularly.

Tom - Lead Electrician

If you have an electrical issue or installation - Tom is your man. No job is too big or too small for Tom and he has been known to work 24/7 to get a job done.

Matt - Engineer

Matt is the latest to join the SCD team, he is domestic and commercially qualified and is an installation expert. There isn’t much that Matt hasn’t fitted over the years and with a great work ethic and the strength of a bear he is a great addition to our team.

Dan - Service Engineer

Dan is our dedicated service engineer he carries out a lot of our servicing and is very obsessive about a clean and safe boiler. It’s real family affair for Dan as his cousin Lindsay also works for our sister company.


Areas Of Expertise

Servicing & Repairs

An annual boiler service can provide peace of mind when it comes to looking after you and your family. SCD will carry out a full service to any appliances and also a system health check.

Boiler Installation

There comes a time when your appliance needs replacing and it can be a big expense. SCD are experts at boiler replacement and installations and you will save money with a new A rated boiler.

Heating Upgrades

Better smarter controls or just a sludged up system? The team at SCD can help with best advice on how to improve and maintain your central heating system.

Bathroom Installs

From Design to Install, from a tap to a shower SC Duncan carryout full bathroom installations. We work with you to ensure you get the best bathroom possible and offer a free no obligation design visit.


If there is water in it and it is in your house SC Duncan have all your plumbing needs covered, We are able to do everything from a tap washer to a whole house booster pump. All at fixed fair prices.


We have a dedicated team of electrical engineers who carry out EICR’s for landlords and everything else as far as your electrical needs. Full house rewires are completed on time with minimal fuss.


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