If you apply for a loan, a mortgage or even a mobile 'phone contract, lenders will check your credit report to establish how responsible you are as a borrower and to decide whether or not to lend to you.
Maybe you pay off your credit card in full every month but have missed a payment because of the recent computer problems at NatWest, RBS and Ulster Bank. How might that affect your credit rating?
Perhaps you're one of seven million adults who have never taken out any form of credit. What problems might that cause in the future, if you need financial help to buy a property or set up a business?
How can you build up a credit history?
What can you do if you're refused credit?
How easy is it to access your credit score?
What impact would bankruptcy or an Individual Voluntary Arrangement have on your credit score?
How do you correct a mistake on your credit file?
How can you best protect against identity fraud?
If you'd like advice on any aspect of credit reports, you can contact Money Box Live.
Paul Lewis was joined by:
• Owen Roberts, head,
• Neil Munroe, external affairs director,
• Laura Wale, money advisor
Presenter: Paul Lewis
Producer: Lesley McAlpine