What You Need, When You Need It

Now fully OFTEC registered to install and service all Oil fired boilers


We are a Wiltshire based family business established since 1988.  We offer expert service and advice for all your heating and plumbing needs.  Based in Bradford on Avon we cover Trowbridge, Bath, Melksham, Corsham and surrounding villages.  So no matter whether you need a complete heating system installed or a local plumber to install an outside tap we will be able to help.

Our specialist areas include:

  • Central heating systems

  • Oil and Gas Boiler replacements

  • Kitchen installation

  • Bathroom replacements

  • Servicing

  • Gas appliances including fires and cookers


Professional & Recommended
We recognise how important peace of mind is when it comes to any work on your property. Check out our customer testimonials to see for yourself.  We are gas safe registered click here to see our full registration details on the Gas Safe Register.

We work to hard to provide all our customers with an industry-leading service at the most competitive prices.

Fully trained Staff
Company proprietor Mark Griffiths has been working in the industry for 30 years with membership of CORGI since 1991 and gas safe since formation and holds City and Guilds qualifications and numerous gas qualifications.

James Griffiths (son) has completed City and Guilds levels1,2,and 3 in plumbing and gas UHW10 Domestic hot water storage.  Both have completed a number of other training programs, do ask if you would like the full details.

We strive to provide not only the highest standard of workmanship, but also the finest level of customer service, do read our testimonials and take a look at our gallery.


"Mark did a great job fitting our new gas boiler. He and his sons worked hard to get the job done on time. They were all very professional and accommodating throughout and his building skills came in very handy in making good following the removal of our old boiler, meaning that we didn't have to find a separate builder to do that side of things. We would happily recommend Mark to others. Thanks Mark"

Richard, Bath



Worcester Greenstar 9i-24i System Inside

We provide all of our customers with a high level of service and professional advice on their heating installation.  We can discuss your central heating requirements and we offer free advice and written quotations.  We work with a range of manufacturers so that we can supply you with the right boiler to suit your needs and lifestyle. 

Some of the services we provide:

  • Central heating installation and repairs

  • Oil and Gas Boiler replacements

  • High efficiency condensing systems

  • Servicing

  • Gas safety checks

  • Gas servicing

  • Gas cookers

  • Gas fire installation

  • Landlord Safety Certificates

Heating Installation


We carry out all plumbing work from a leaking tap to a new bathroom and specialise in providing domestic customers with reliable, affordable and expert service.  Our extensive list of plumbing services includes:

Leaks and burst pipes
Shower and bathroom installation
Replacement taps
Saniflo units
Water Softeners
Immersion heaters

All our work is covered by our £2,000,000 public liability insurance and undertaken to the highest professional standards and Health and Safety requirements.  Whether you need large-scale domestic plumbing or just need a leaky tap fixed, there is no job too big and none too small.  

To find out more about our plumbing services, please don’t hesitate to get in touch.



As well as offering a complete heating and plumbing service we also run a bathroom service division.  This enables us to complete all associated building works to offer our customers a complete service.

Bathroom Services


Two kitchens that we fitted recently.  The work we undertook included fitting units, worktops, appliances, plumbing, lighting and all tiling.

The first installation included fitting french doors which replaced the existing window.  The second installation involved the partitioning of a section to form the new wall, installing new electrics and plastering as necessary.



MJ Griffiths was employed by myself to convert a very dark, dull loft room.  To strip out existing loft space, open to the apex and reinsulate the walls.  Velux windows were insterted, floors stripped and sanded, cupboards built and concealed celing down lights wired in.
We found him and his fellow workers to be of the highest standard and his workmanship was neat, clean and efficent.

I would recommend him to any of my friends without hesitation and have recently had a quote for further work.
J Ure (Midge Ure) - Monkton Farleigh



41 Christchurch RoadBradford-on-Avon, UK BA15 1TB

07850 396 206


I have been trading as MJ Griifiths for nearly 30 years now .

My father was a  gas engineer and I initially trained with him and got my City & Guilds qualifications. I branched into building a few years later in a partnership with a school friend who was a carpenter.

Together we established a building , plumbing and heating business covering all aspects of the trade.

The partnership no longer exists but M J Griffiths does ! 

It's fair to say that I am a very experienced 

all rounder, who specialises in heating, plumbing, all gas work, boiler servicing and full bathroom design and installation.

My company does not have to use other trades enabling us to keep costs down, with no delays waiting for other trades. 

We install boilers to fit all budgets.

This autumn we will become Worcester accredited and be able to offer a 10 year guarantee.  



My son James qualified as a gas engineer 6 years ago and has worked with me for 10 years.

James specializes in all the disciplines of plumbing and heating ensuring you get an exceptional level of quality and service, and of course a great big smile!


My youngest son Max has recently joined the team and is currently undertaking training at Trowbridge college on day release, has attended training at Worcester training facilities and will soon be a fully qualified member of the team.