Guidance

Cartels: policy for witnessing and reporting

General information about cartels and the CMA's policy for cartel informants.

• From: Competition and Markets Authority
• Published: 31 March 2014

Documents

Rewards for information about cartels

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Details

Tell the CMA if you have information about a cartel you’ve witnessed. A cartel is when 2 or more rival businesses agree to act together instead of competing.

You could get a reward of up to £250,000 for information that leads to an investigation.

Find out more about cartels and how to avoid them.

• Online:
  • Make an online report
• Phone:
  • Phone: 020 3738 6888

  Find out about call charges

• Email:
  • cartelshotline@cma.gov.uk

For more information about cartels, visit the Cheating or Competing? website