Not true unless your employment is within the banking sector...
Insolvency uk, government organisation has all the correct information, and you can even file your bankruptcy petition online:
http://www.insolvency.gov.uk/
To the OP, I would suggest that the person who is alleged to have incurred this debt to speak the the credit card company first see if something can be arranged. If he cannot provide sufficent evidence to prove he did not incur the credit card debt, I'm afraid he will have to pay it.