A child's balloon is causing delays on the trains.

The balloon is caught on the overhead electric wires between Wickford and Billericay, blocking some lines.

Train services running through these stations may be cancelled, delayed by up to 25 minutes or revised. Disruption is expected until 9.30am.

Network Rail engineers are now at the location to remove the obstruction. Until this is completed, trains in the London bound direction from Southend Victoria and Southminster are travelling over the Southend bound track.

This will cause some delays to trains in both directions.