Redundancy has been a fact of life for workers at investment banks for the past five years. Few have seen off the clouds of despair and the downpouring of depression that comes with losing their job quite as literally as Charles Ejogo.

Charles grabbed his 15 minutes of fame last week on a new BBC TV show. The Dragons' Den invites hopeful entrepreneurs to pitch their business ideas to a panel of multi-millionaires who decide on the spot whether to invest their own money or not.