Christmas rail strikes to go ahead as union rejects offer from operators - as firefighters could become latest to walk out over payMick Lynch, the RMT general secretary, said the offer does not meet criteria for securing a long-term settlement on job security, a decent pay rise and protecting working conditions for staff.They could be joined by more than 33,000 firefighters and control room staff, who start voting today on whether to strike over pay.The RMT said: "The RDG is offering 4% in 2022 and 2023 which is conditional on RMT members accepting vast changes to working practices, huge job losses, driver only operated (DOO) trains on all companies and the closure of all ticket offices."Mr Lynch added: "We have rejected this offer as it does not meet any of our criteria for securing a settlement on long term job security, a decent pay rise and protecting working conditions.Read more:All the lines affected by train strikes over Christmas and JanuaryStrikes every day before Christmas - which sectors are affected and whyAll the lines affected by train strikes over Christmas and JanuaryStrikes every day before Christmas - which sectors are affected and whyThe RMT has demanded an urgent meeting with the RDG on Monday morning in the hope of trying to resolve the dispute, the union posted on Twitter."