Have you witnessed or been involved in a cartel?


Cartels are illegal. They’re a form of stealing that stop businesses, consumers and taxpayers getting a fair deal.

Whatever your business, you need to know what cartels look like. They involve businesses cheating their customers by agreeing ‘not to compete’ with each other, so that they can keep their prices up.

That’s why we’re cracking down. If you know about a cartel – whether you’re directly involved or have witnessed one – we need to know.

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0203 738 6833

Apply for leniency if you have been part of a cartel

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0203 738 6888

Call the cartels hotline if you suspect cartel activity

What happens if you’re in a cartel


  • You could go to prison
  • You and your business could be heavily fined
  • You could be banned from running a company

If you’re involved, you could avoid these consequences – but you must be the first to report it to us.

And if you have information about a cartel, but are not directly involved, you could earn a reward of up to £100,000.

How you can help fight cartels

Report it


If you think you’ve witnessed or been part of cartel activity, report it and help us keep business fair.

If you’re involved, you could avoid the penalties but only if you’re the first to come forward. Find out more.

If you have information about a cartel but are not directly involved, you could receive a reward of up to £100,000.  Find out more.