NEED HELP ? - Call : +44 (0)1245 428500 or email :
OFFICE HOURS : 9:00am - 5:30pm GMT/BST Monday to Friday

About Rayleigh Instruments

The Business

Formed in 1964, Rayleigh Instruments has become one of the leading manufacturers and suppliers of energy monitoring and renewable energy products in the UK with a global distribution network. We are also a trusted technical, strategic, and innovation partner for large OEMs and are also the only UK authorised MID testing lab.

Our range includes current transformers, kilowatt-hour meters, multifunction power monitors, measuring transducers, data loggers, photovoltaic single-phase and three-phase inverters, battery storage solutions, communication interfaces and software.

We are also stockists of analogue and digital square DIN switchboard instruments, safety, temperature, pressure relays, and timing products.

With our headquarters based in Essex, we also have a European Office in Poland where our rayleighconnect™ software development team is based.

We both design and manufacture a complete range of products, holding numerous patents due to our innovative and ground-breaking designs, including our market-changing easywire® system, which we launched in 2010.

Products are manufactured at our UK head office as well as at a number of specialist manufacturing facilities outside the UK. Our design and manufacturing facility also produces several bespoke products for railway rolling stock, such as door systems and buttons, audible devices, illuminated displays, speed controllers and thermostats.

The Company

  • Name : Rayleigh Instruments Limited
  • Head Office : Raytel House, Cutlers Road, South Woodham Ferrers, Chelmsford, Essex CM3 5WA. UK
  • Telephone : +44 (0) 1245 428 500 (General Enquiries)
  • Telefax : +44 (0) 1245 428509
  • e-mail :
  • Internet :
  • Established : 1964
  • Company Registration No : 808961 - Registered in England at above address.
  • VAT No : GB 394 9607 00
  • Directors : D. G. Brookes (Managing), R. Lawrence (Chairman)

Raytel Group Limited   A Raytel Group Company

Quality Policy

Our Aims

Our Vision :

To be recognised as a world leader in the following categories providing innovative solutions that enable our customers to gain commercial advantage:

  • Energy monitoring
  • Control & Instrumentation
  • Renewable energy generation and storage
  • IOT monitoring and control software

Our Mission :

To offer our customers top quality competitively priced products and systems, with the best possible technical and customer support.

As well as offering a wide range of standard items from stock, we can also provide bespoke solutions through our design team which can help our customers gain advantage over their competitors.

We have established a Strategic Plan and business objectives that are documented, measurable, and relevant to our quality management system and to our Quality Policy. These are communicated at all levels within the business, and are monitored and measured regularly to ensure growth, innovation and continual improvement.

We operate within and conform to the necessary Directives, statutory and regulatory requirements, and to the requirements of ISO9001 as certified through BSI, certificate registration number FS12165.

We want our customers, and potential new customers, to receive the best possible care, attention, and experience when making contact with us. We aim to do this by focusing all staff on how to handle enquiries professionally and efficiently in a way that satisfies or even exceeds our customers’ expectations.

We believe that the above words outline our commitment not only to our own business growth, but also to our customers’ so that we can all work together to our mutual benefit well into the future.

Our Values


  • Deliver what we promise
  • Be Trustworthy
  • Compete fairly
  • Do not improperly influence others or let them improperly influence us
  • Be honest


  • Take pride in what we make and do
  • Have complete focus on ensuring total customer satisfaction
  • Act with a sense of urgency
  • Achieve excellence by taking responsibility for getting it right
  • Take ownership for getting it done


  • Treat others with respect
  • Utilise the talents of our team
  • Strengthen our team by training and recruiting the best
  • Collaborate with employees, suppliers and customers
  • Earn trust of others


  • Be committed to Rayleigh Instruments success
  • Protect the health and safety of others and ourselves
  • Are personally accountable to reach our goals
  • Insist on the highest standards


  • Prevent waste by minimising the use of materials, energy and water
  • Minimise the impact of our business on communities and the environment
  • Develop better systems that integrate and optimise resources and reduce our environmental impact
  • Comply with environmental laws and regulations, and expect that our suppliers to do the same

Full statement and business manual available on request.

Links and Affiliations

To see a comprehensive list of our Links and Affiliations please Click Here