A factory employee from Gretna was found to be more than four times the legal drink-drive limit after parking up at his place of work.
Mark Smith, 48, could now face a prison sentence after being caught on camera committing the crime on May 6.
Prosecutor Pam Ward told Carlisle Magistrates’ Court two police officers were on duty at 8.50pm when they were made aware of an “ongoing incident” at a nearby factory in the city’s Brunel Way area.