Commuters have been facing travel chaos today as Southern Rail workers begin a 72-hour strike.
Staff walked out at midnight in an RMT Union strike over the role of conductors. Meanwhile Aslef have banned overtime.
Southern Rail said that 50% of their services are running today, but in previous strikes they have claimed 60% of services were working.
Many have vented their anger at the poor service on Twitter.
See their reaction below