"Network Rail need to face the full force of the law over the Carmont disaster near Stonehaven to give bereaved families some sense of justice.
"Network Rail's attitude to safety has been abysmal with staff shortages and 20 recommendations by the Rail Accident Investigation Branch for improvements, most of which were completely ignored by the public body.
"Currently there are massive shortages of staff on the ground, sometimes with a couple of people responsible for 100’s of miles of rail track, often located in areas at high risk of flooding and landslides.
"The law must be toughed up regardless of the outcome of this case and corporate manslaughter must be made an option in similar cases in the future.
"Privatisation and the use of profit hungry contractors on the railway has made the whole network less safe and it is our belief that public ownership would be best for railway workers and passengers."