Which Dragon's Den investor founded Amstrad?

Alan Sugar founded Amstrad.

Alan Sugar is a British businessman, media personality and politician who established Amstrad in 1968. The company became known for consumer electronics, including computers and audio equipment, and the name is formed from his initials and the word trading. Sugar later became a prominent television investor and appeared as a dragon on the British version of Dragon's Den.

His business history gave him a distinctive position among television investors. Unlike a guest celebrity investor, he had built a major electronics company before becoming a familiar television personality. His experience shaped the way he evaluated entrepreneurs, particularly around product demand, manufacturing and commercial scale.

Amstrad is sometimes confused with businesses owned or invested in by other dragons. Peter Jones is associated with technology and telecommunications interests, while Theo Paphitis is known for retail and consumer businesses. Amstrad's founder was Sugar.