Bentley is believed to be inviting a number of UK agencies, including McCann London, to pitch for its UK and European account.
The Drum understands that Atomic resigned the account earlier – which predominantly includes dealer marketing – earlier this year.
Atomic won the £5m business after a competitive pitch process in June last year against Adam & Eve/DDB, McCann London, and incumbent, Connect Group, which had worked on the business for over 10 years.
Atomic declined to comment and a spokesperson for Bentley was unavailable at the time of writing.
Source: The Drum