The RMT union has confirmed that 27 days of strike action by South Western Railway workers - due to start on Monday, is going ahead after talks with conciliation service ACAS failed.
The industrial action which is set to last throughout December is in an on-going dispute over the role of guards on trains - and will cause travel disruption for commuters, Christmas shoppers and people visiting families over the festive break.
Talks were held over the past two days at the conciliation service Acas but ended without agreement. The union accused the company of "wrecking" attempts to reach a deal in the long-running row over the role of guards on trains.
Around 900 trains a day will be cancelled during the action - which will last until January 1st.