Competition

Cartels are illegal

A cartel is an illegal agreement between competitors which restricts competition. Cartels are often difficult to detect because the cartel members have a common interest in keeping the agreement secret.

Help us uncover cartels and other infringements

The Competition and Consumer Authority relies on information from outsiders to enforce the Danish Competition Act. If you suspect a cartel or other infringements of the competition rules, we would like to hear from you.

You can contact us either by calling or writing to us. No matter how you choose to contact us, you have the option to do so anonymously.

Contact us by phone

If you have any suspicions regarding cartels or other violations of the Competition Act, our investigators would like to hear from you. They can be reached directly by phone +45 41 93 94 95, Monday – Friday 9 am – 3 pm.

Please note, that if you wish to remain anonymous, you should call from a hidden number and not disclose your name. We are required to record your name and phone number if we become aware of them.

Contact us in writing

You can also contact our investigators in writing via an encrypted connection through our whistle-blower portal, where you can also choose to remain anonymous.

It is important that you save the key code from the receipt you receive when you have submitted your report. You can only log in to the whistleblower portal and read messages from us with your unique key code.

We would prefer to be able to contact you if we have any follow-up questions. This can be crucial for our investigation and our ability to pursue a potential case. You can also choose to provide an email address that cannot be traced back to you if you prefer to communicate in that way.

We need documentation

We would like to recieve as many details as possible. Among other things, we would like to know the grounds for your suspicion and the source of your information. If you have evi-dence in the form of e-mails, other correspondence or other relevant documents, we would also like to see it.

Write anonymously to our investigators