Drivers are being warned about long delays at The Brotherhood Roundabout on Bourges Boulevard following a collision.
There are reports there are several police cars and fire engines at the scene of the crash.
Stagecoach Peterborough said bus services were being delayed by the incident, and there are queues on the road approaching the roundabout.
There are no details available yet as to whether there are any injuries - or how serious they might be.
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