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Commercial Installation and Refurbishment Projects.

For over 25 years SDG have been carrying out mechanical and electrical installations with values ranging between £5000 to £400,000.00. The projects include both refurbishment and new build across a number of sectors including education, healthcare, retail, commercial and leisure.

Our client base includes Local Authorities, NHS Trusts, Education Academies, Main Contractors along with various private companies and individuals. All of our work is fully guaranteed and covered by suitable levels of insurance.


Emergency Call Outs, PPM and Servicing.

SDG are a professional company dedicated to looking after your building services. Our staff are all DBS checked to an enhanced level and fully trained in the field in which they are working.

We are here to keep your school, hotel, care home or place of work operational whatever the problem may be in a cost effective and efficient manner. Our experienced management team are happy to work out your PPM requirements and assist you in formulating a maintenance schedule.

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  • Commercial Boiler Servicing

  • Commercial Air Heater Servicing

  • Commercial Heating Engineers

  • Commercial Electrical Experts

  • Water Treatment

  • Commercial Heating Installations

  • Commercial Electrical Testing in Bedfordshire

  • Commercial Air Conditioning

  • Installations, Maintenance and Repair

  • Thermal Insulation


We use SDG for our electrical work because of their professionalism. They always aim to complete our projects within the timescales available and to a very high standard.

We appreciate their advice on technical matters, they are very knowledgeable and give fantastic independent advice
— Commercial Client
SDG electrical have always provided us with a reliable, efficient and professional service. I would thoroughly recommend them to any one in need of a contractor to undertake electrical or plumbing repairs, alterations or installation.
— Commercial Client
We have used SDG Electrical for a host of applications over the past year or so and we have always found their team professional, friendly, and ultimately committed to finding a cost effective and practical solution to any problem we encountered.

Nothing seems too much trouble and we now have new lighting throughout our office which adheres to requirements, an alarm system, and tested appliances to protect my staff. I would have no hesitation in recommending them now or in the future.
— Commercial Client