Bosses at Greater Anglia are carrying out a full investigation after it emerged that a stand-in guard, replacing a striking RMT worker, unlocked doors on the wrong side of a train in an Ipswich platform.

The train, from Peterborough, had just pulled in to platform one at the station. The track has a path on the opposite side from the platform that is used by staff to service the trains.

The guard unlocked the doors on the wrong side, which led to two passengers opening a door and climbing on to the path, before realising the mistake and locking them again.

Although no one was hurt, the RMT said such a mistake could have had 'potentially disastrous' consequences.

Richard Dean, from Greater Anglia said an investigation was underway following the incident on October 3, adding the company operated a safe service throughout the strike.