In the beginning…

Our journey began with Mr Eric Cole. Born in Rochford, Essex on 4th July 1901, Eric was a driving force behind his father’s business, which in 1922 was changed to E. Kirkham Cole – Electrical and Wireless Engineer.

In the early 20th century, electricity was only just being rolled out into domestic properties throughout the United Kingdom. Under the guise above, Eric and his father were responsible for wiring houses and repairing electrical appliances for local residents. The business concept changed when the two were approached by a Mr Verrells in 1924, who was interested in wiring appliances to the mains circuit – a feat that at the time was seen as impossible. At Mr Verrells’ request, Mr Cole did, however, manage to wire a few lamps and a set to the mains, and this fated meeting of two minds resulted in the creation of a new company: E.K Cole Ltd (abbreviated to EKCO).

Capital was raised by a Mr Maxwell, who was in fact the owner of Peter Pans’ Playground in Southend, a children’s leisure resort now known as Adventure Island. Other contributors to the business, who also eventually became directors, were local builder Mr Manners and milkman Mr Pring. William Stratfield Verrells took on the roles of Chairman and Managing Director, while Eric Cole was given the title of Works and Technical Director.

In the years that followed, EKCO would create a number of sub-companies, and many of these firms are still active today.

The development of the Thermotube

Just over twenty years after its inception in 1945, EKCO Domestic Products was employing over 8,000 people across the country and specialised in manufacturing mains and portable TV’s, mains and portable radios, radiograms, tape recorders, car radios, electric heaters, thermovent heaters, electric blankets, plastic toilet seats, various plastic utensils, plastic bathroom fittings and ‘Superbath’ baby-baths. Production of the Thermotube tubular heaters, then seen as an innovation, began in 1948 in Malmesbury, Wiltshire, and continued here until 1960.

A different era…

The business has not been without its challenges. An unsuccessful merger with PYE (British Electronic Industries Ltd) in 1960 contributed to a large decline in the production of its TV and radio items, not helped by the unexpected passing of Eric Cole at the age of 65 and an untimely financial scandal. Soon, PYE was up for sale.


Philips Electrical Industries, then an industry heavyweight, became the new owner of EKCO/PYE in 1967, and the organisation was separated into three different companies.

Philips were integral to the ongoing development of the Thermotube heater, which was then considered its flagship product. At one time, three entire businesses were working together to build, test and manufacture the Thermotube.

Thermo Products Ltd

Fast forward to the mid-1990s and production of the Thermotube had been moved to Plated Presswork Ltd, which was located in Ashford, Kent. The product was manufactured here by Harlow Group Ltd for Philips Electronics UK until 2000, when the plant was shut down due to the construction of the Eurostar rail network. Harlow Group Ltd eventually bought the rights to the Thermotube from Philips Electronics UK, leading to the formation of Harlow Contract Manufacturing Ltd in 2001. This company was renamed Thermo Products Ltd in 2003.

In 2005 Harlow Group Ltd was involved in a Management Buy Out (MBO) and as part of the deal Thermo Products Ltd was split away from the main group of companies; Harlow Fabrications, Harlow Spraytech and Harlow Pressings.

In 2018 Thermo was Acquired by LL Potter & Sons (Taplow) Ltd. Potters have had a close relationship with Thermo for many years, as a principal supplier. At the end of 2018, The Thermo factory moved to new premises in Taplow, Berkshire. On the same site as Potters, giving greater Synergy between the two companies, and offering more flexibility and value for money to its long-standing customer base.

Thermo Products has been free to carry on the development of the Thermotube tubular heater and make it the flagship product that it is today, making it cheaper to run, providing better heat output performance for your money and above all keeping production in its birthplace the United Kingdom.