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Welcome to CSI Ltd electrical, plumbing and gas safety inspection and testing to the plumbing, electrical and gas installations and equipment safety certificates markets across the London


Control System Installation Ltd is a company in the field of combined gas and electrical safety inspections, gas and electrical equipment services, safety and performance checks, products and advice, in accordance with UK gas safety and NICEIC approved contractor regulations.


Control System Installation Ltd specialises in providing a flexible service to home owners, landlords, Maintenance Company, building manager, estate agents and the commercial sectors. This includes the rented sector, home buyers and property vendors, the buy-to-let investor and local government bodies.


As you are aware you have to ensure that all of your gas, electrical appliances and installations in your tenanted homes are safe?


The only way you can be absolutely sure they are safe is to have them tested with a gas and electrical safety certificate issued to verify their conformance by a specially-trained engineers. This will enable you to protect your landlords, clients, their tenants and even your staff, in the light of current legislation.

However, we realise that finding time in the day to organise everything you need to do for your clients is a tricky business, so it is vital that you align yourself a company that understands your work pressures and can provide a home maintenance service for managed properties that slots into your roll-out plan.


CSI Ltd has been providing agents with a one-stop solution when it comes to the mandatory gas and electrical inspections and home maintenance plans. You make a quick call and we'll schedule in the inspection at a date and time that is suitable for you.


Why use CSI Ltd?

  • We are registered with Gas Safe, complying with legal requirements when working on gas.
  • We are qualified Domestic Energy Assessors able to produce EPCs.
  • We have a City and Guilds Inspection and Testing qualification and can carry out PAT testing on all electrical appliances.
  • We are NICEIC Approved Contractor Registered.
  • We offer a combined Landlord Safety Certificates services...Saving TIME & MONEY.
  • Our services are available in London and Greater London areas.
  • Our engineers are fully qualified, professional and efficient.
  • FREE Estimate & FREE Consultation.
  • We have £2 million public liability insurance.
  • Concessions Available.



Combined Certificates Services


  • Part P Certificates
  • Periodic Inspection Reports
  • Landlord Gas Safety Certificates
  • Fire Alarm System Certificates
  • Combined Pressure Test Report
  • Electrical Installation Certificates
  • Energy Performance Certificates
  • Portable Appliance Testing Certificates
  • Emergency Lighting Completion Certificates
  • Commercial Gas Installation Safety Certificates
  • Commissioning of Water Pipework Certificates


This inspection and checking service saves agents, landlords and homeowners’ time and money.


We provide a comprehensive range of electrical, plumbing, gas, installation and services, then offer free, no obligation, quotations and our friendly, professional staff are on hand to offer advice and discuss your requirements with you in full.



If you can't find what you're looking for it doesn't mean that we can't help please contact us



CSI runs free advice phone lines and online chat offering information on installations Safety (electrical, plumbing, gas and building). 

Phone Lines are open between 10:00am and 2:30pm Monday to Thursday and 11.00am to1.00pm on Friday (excluding bank holiday). To contact the Safety Advice call 020 7993 2002. 

Online chat is open between 9:00am and 5:30pm Monday to Thursday and 10.00am to 4:00pm on Friday to Sunday (including bank holiday).

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Annual Safety Certificate

I used CSI Ltd to carry out an extensive PAT testing at my dental practice...

Dr Reza Farid Dental Practice

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Honestly Prices

I received a price from CSI for a new boiler installation but I decided to go with another company that gave me very cheaper ...

Shirin N9

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Gas & Electrical Safety Certificate

Very helpful staff over the phone and also on the day of the engineer's visit the guy was really friendly...

David EN4

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Efficient and Organized

CSI Ltd were extremely professional from the initial quote to the end of the job.

Birdwatch Magazine

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