Pitch perfect

Rapper Tinie Tempah is the latest guest Dragon to enter the Den

- Julia Bradbury

As more entrepreneurs pitch for investments in Dragons' Den this week, they will be hoping to hit all the right notes when they find rapper Tinie Tempah on the panel.

The award-winning artist is the latest guest Dragon to occupy the fifth chair alongside regulars Peter Jones, Deborah Meaden, Steven Bartlett and Touker Suleyman on BBC1's business showcase.