Which Dragon's Den investor joined the UK panel in series 13, first broadcast in 2015?

Touker Suleyman joined the UK Dragon's Den panel in series 13, first broadcast in 2015.

Suleyman is a British-Cypriot entrepreneur and investor whose business interests include fashion and retail. He became known to a broad television audience through Dragon's Den, where he assessed companies, challenged founders on their numbers and negotiated potential investments.

Series 13 placed Suleyman among a changing generation of Dragons. The panel has not remained fixed throughout the programme's history: investors have joined, departed and returned, creating different combinations from one series to another.

Suleyman is sometimes confused with later additions Sara Davies and Steven Bartlett because all three became prominent modern-era Dragons. Davies joined later, in series 17, while Bartlett joined in series 20. The series number and 2015 broadcast date identify Suleyman specifically.