In which series did Touker Suleyman join the Dragon's Den panel?

Touker Suleyman joined the Dragon's Den panel in series 13.

Suleyman became a Dragon in the thirteenth series of the British programme, bringing experience from fashion manufacturing, retail and brand investment. He is particularly associated with the fashion company Low Profile Group and with ownership of the shirt brand Hawes & Curtis.

His arrival came after several changes to the investor lineup over the programme's first decade. Dragon's Den frequently refreshes its panel, so series numbers are useful for distinguishing when individual investors entered the show.

Suleyman's business career began in textiles and manufacturing, areas that informed many of his judgments about products, margins, sourcing and retail distribution. He is not the same investor as Tej Lalvani, who joined later in series 15.