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Two of the many historic riverside manufacturing sites in the Trowse Triangle deserve particular mention: Boulton and Paul, and Colmans.

Boulton & Paul - Wire netting to airships
The origins of Boulton & Paul's works go back to the ironmongers owned by William Moore in Cockey Lane in 1797. By the time of the First World War, the firm had works in Rose Lane; its products included wire netting made on a Norwich-invented machine.

The War led them into making planes for the Western Front - the prototype for their first was flown on Mousehold Heath. The works expanded, and moved to Riverside during the War, and they went on to make the Sopwith Camel, the most successful fighter plane of the time. They turned out 28 a week, and manufactured over 2500 planes of all kinds during the war.

They went into airship production in the early 1930s, and built the airframe for R101; great things were expected of it, but it crashed in flames over France on a flight to India. It was the end of the road for lighter-than-air aviation. Boulton & Paul sold the aircraft business and turned to other forms of engineering: temporary buildings for the armed forces, tank transporters and shipping containers during the Second World War; then double-glazed windows. The factory on the Riverside site was demolished in the 1990s to make way for mixed development.

Click to view larger pictures.


Sopwith Camel.   R101 Airship.

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