BBC News Published image copyrightSouth Beds News Agency image captionThe trial at St Albans Magistrates' Court has been delayed for a second time in as many days Workers were stuck at a newspaper printing plant for up to seven hours after members of Extinction Rebellion staged a protest outside the main gates, a court heard. A group erected two bamboo structures and parked two vans across the entrance to The Sun's printing plant in Hertfordshire on 4 September. It is estimated the blockade stopped 3.5 million newspapers being delivered. Six defendants deny a charge of wilfully obstructing a highway. The trial at St Albans Magistrates' Court was delayed for a second time in as many days as one of the accused, Sally Davidson, left the court room after judge Sally Fudge said her co-defendant Liam Norton would be tried in his absence.