General Enquiries

For general enquiries, please contact us via the details below:
Connect Plus, Connect Plus House, St Albans Road, South Mimms, Potters Bar, Hertfordshire EN6 3NP

Telephone: 020 3386 8500
or via email:


Media Enquiries

If you are a member of the media with a press or advertising enquiry, please contact the Communications team via the details below:

Telephone: 020 3386 8500
or via email at

Finance Enquiries

For any payment related queries, please contact the Finance team via the details below:

Telephone: 020 3386 8500
or via email at

Faults, queries, com­plaints and feed­back regard­ing the M25 network can be reported 24/7 via the National Highways Customer Contact Centre:

Telephone: 0300 123 5000
or via email at

Calls to 03 num­bers cost no more than a national rate call to an 01 or 02 num­ber and must count towards any inclu­sive min­utes in the same way as 01 and 02 calls. These rules apply to calls from any type of line includ­ing mobile, BT, other fixed line or payphone.

  • Calls may be recorded or monitored.
  • Do not use a mobile phone whilst driving.
  • In an emer­gency then please dial 999.

If your query relates to Dart Charge, please contact 0300 300 0120 or visit