After serving up lunches and canapes to hungry business professionals in last week's task, the candidates face another thorough workout in their third task as Sir Alan sets them the challenge to create a new piece of portable gym equipment.

The candidates must come up with a completely original product that tones and flexes muscles, and they must create a distinctive poster to promote their product's unique properties. Finally, they must demonstrate their pitching skills to three industry experts in the hope of securing orders. With just a couple of days to complete their task, who has the stamina to keep going, and who will fall at the first hurdle?

As ever, Nick and Margaret are there to keep a watchful eye on proceedings, and in the boardroom one more candidate finds themselves on the ropes as Sir Alan delivers the killer blow with the immortal words: 'You're Fired!'.