Founded in 1899, Newton Derby has a long history of delivering generator solutions for technically demanding projects around the world.

The company was founded by the Newton brothers and one of the brothers, Mr Frederick Newton, had continued involvement of designing generators for aircraft in both world wars.

Towards the end of the Great War, Frederick Newton produced the first design for a small, wind driven, aircraft generator, and in 1918 a generator designed by him was adopted as standard by the Air Force. This same piece of equipment, with variations, was a standard item in the Air Force for a decade.

During the period between the two world wars, Mr Newton was responsible for the design of many varieties of light-weight aircraft generators and rotary transformers, and in 1938 he turned his attention towards designing an automatic carbon pile voltage and current regulator.

The Newton Derby Automatic Voltage Regulator was manufactured in considerable quantities in the USA as well as Canada and Australia.

Towards the end of the Second World War, the regulator was fitted on every British and American aircraft used in the war. One of the largest awards made by the Government for war-time inventions was granted to Mr Newton and the company.

Today, Newton Derby is a division of Winder Power, a leading power and distribution transformer manufacturing company based in Yorkshire, UK.

With an experienced team of specialists, Newton Derby is able to deliver to its customers’ requirements from initial design and specification through to manufacturing.

Mr. Newton retired as Technical Director in 1947 but continued as the firm’s Technical Consultant until 1954.  He remained a member of the Board of Directors until his death in November 1959.

Winder Power Timeline


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2012 – Management Buyout

2012 – Management Buyout

Andy Pinkney, Jo Evans, Laurence MacKenzie and Paul Matthews led a second management buyout backed by Enterprise Ventures and Harry McCracken.

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2008 – A move to a fantastic new premises

2008 – A move to a fantastic new premises

In 2008 Winder Power moved to newer and larger premises in Stanningley, just around the corner from its previous home but another world away in terms of facilities. This move brought a new dimension to the company’s capabilities and also to its commitment to customer service.

The new headquarters provided enhanced facilities for continued growth of its power and distribution transformer business for utilities transportation and industry.

The new premises nearly doubles Winder Power’s manufacturing capability, offering larger crane facilities, room for a new test laboratory and provided a more efficient office environment for the growing design, sales and business support teams.

Manufacturing space was also increase, which enhanced productivity.

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2005 – First management buy-out

Management Buy-out

The company underwent a management buy-out, which installed a senior management team and a new chairman at the head of the business with the aim of taking Winder to the next level in terms of growth, services offered and utility contracts won. This was a highly successful team that created a strong platform to develop and focus the business.

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2004 – First utility term contract

The company secured a three year deal with Northern Ireland Electricity for the design, manufacture and supply of power transformers in a variety of capacities, from 6.25MVA through to 25MVA. The company has since been very successful in winning long term contracts with other electricity network owners.

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1981 – Winder Power & Leeds United

Leeds United

In 1981 Winder Power, or RF Winder as it was styled then, was the first main shirt sponsor of Leeds United, and it was the period that brought the company to the attention of the wider local community. The sponsorship package at the time cost around £40,000, which is the equivalent of £120,000 in today’s money!

You can see the shirt design below, and if you are really keen you can purchase one of the original shirts on the website vintagefootballshirts.com – for £110!

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1970's winder power warehouse

At this stage in the company’s development, the business covered a wide range of services and mainly focused on motors.

Winder Power was manufacturing new transformers but only small units.

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Throughout the 1960s the company was heavily involved in electrical contracting work such as wiring factories and buildings, with a team of 50 people producing this kind of work.