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Claude Lyons


Setting the Standard in AC Voltage Control and Stabilisation Technology


The Timeline History of Claude Lyons

At Claude Lyons, our story is one of relentless innovation and unwavering dedication to excellence. Since our inception in 1917, we have been at the forefront of shaping the landscape of AC Voltage Control and Voltage Stabiliser technology. With a legacy spanning over a century, we take pride in our rich history and the milestones that have defined our journey.

1917: Foundations of Excellence
Claude Lyons was founded in Liverpool in 1917 by Claude Lyons. From our humble beginnings, we set out with a vision to revolutionise. Our commitment to quality and innovation laid the cornerstone for our enduring legacy.

Decades of Innovation
Throughout the decades, Claude Lyons continued to push the boundaries of what was possible. From the introduction of groundbreaking technologies to pioneering industry standards, we consistently led the way. Our relentless pursuit of innovation earned us a reputation as a trusted partner and industry leader.

Expansion and Growth
As our reputation grew, so did our reach. We expanded our operations. This period of growth allowed us to better serve our customers and adapt to the evolving needs of the market.

2021 and Beyond
As we look to the future, Claude Lyons remains committed to the values that have guided us since the beginning. With a renewed focus on innovation, sustainability, and customer-centricity, we are poised to write the next chapter of our storied history.



Claude Lyons Leaves The British Army



Claude Lyons Set Up In Business



Claude’s Brother Lewis Lyons Joins Claude Lyons In Business



Claude Lyons® Become Exclusive European Agents For The Range Of Precision Instruments From General Radio



Claude Lyons Limited Incorporated



184 Page Catalogue Released Getting The Most Out Of Radio – An Educational Catalogue Of Quality Components And Accessories



  • Variac® 100-200 Series Launched
  • London Office Was Opened At 40 Buckingham Gate, SW1


Claude Lyons® Introduce The Variac® Variable Transformers To The United Kingdom



Moved To 180-182 Tottenham Court Road, London W1



Claude Lyons Entered The Field Of Mains Voltage Stabilisation And Regulation In The Late 1930s With A Range Of Constant Voltage Transformers.



  • Variac® 100-200 Series Discontinued
  • Variac® X, V3, V6, V30, 10 Series Introduced
  • Berco® 31, 41, 45, 71, 72 Series Introduced


Moved To Hoddesdon, Hertfordshire



The Introduction Of Servo-Mechanical Voltage Stabilisers Based On The Principle Of A Motorised Variable Transformer Controlling A Buck/Boost Transformer.



Variac® X, V3, V6, V30, 10 Series Discontinued

Regulac RX, RB, RK Series Introduced



Lyons Instruments Limited Incorporated



Regulac RX, RB, RK Series Discontinued

Regavolt® 300,400,700,1225 Series Introduced

Regavolt® Range Introduced

Berco® 31, 41, 45, 71, 72 Series Discontinued



Claude Lyons® Acquires Berco Controls Limited



Claude Lyons® Acquire The Transformer & Electrical Company Limited (TEC®)



Claude Lyons® Acquires The Zenith Electrical Co Limited



Regavolt® 300,400,700,1225 Series Discontinued

Regavolt® LI Range Introduced

Claude Lyons Limited Ceases Manufacture At Waltham Cross



The Allendale Group Limited Acquires Lyons Instruments Limited



The Allendale Group Limited Acquires Registered Trading Names Of Claude Lyons, Regavolt, TS, TEC And Bercostat



The Allendale Group Limited Introduces New Re-Designed Ranges Of Regavolt® Variable Auto Transformers Which Meet The Latest Standard BS EN 61558-2-14.



The Allendale Group Limited Introduces New Re-Designed Portavolt Enclosed Regavolts With Analogue Or Digital Metering.



The Allendale Group Limited Introduces New Re-Designed Ranges Of TS® Voltage Stabilisers Which Meet The Latest Standard BS EN 61558-2-26.