麻豆约拍

What can happen when you highlight perceived wrongdoing at a business?

Nicholas Wilson spent the past 13 years saying that a bank he worked for, HFC, had been overcharging people on their credit cards.

Earlier this year his campaign paid off - thousands of people were offered a multi-million-pound compensation payout by HFC's new owners, HSBC.

But the campaign has come at a great cost to the whistleblower Nicholas Wilson, as he told the 麻豆约拍's Rob Young.

(Image: A stressed female worker with her head in her hands. Credit: Frederick Florin/ AFP/ Getty Images)