At Southern there are two days of strikes by guards today (Monday) and Tuesday.
They will walk out again over the New Year holiday.
The dispute is about the role of the guard and driver only operation.
Southern are advising passengers not to travel on the affected days and say many services won't be running at all.
Rail disruption on Monday 19th February:
The industrial action Monday 19th December involves two rail unions, (Associated Society of Locomotive Engineers and Firemen) who represent nearly all the train drivers in the UK and the (National Union of Rail, Maritime and Transport Workers) who represent members from nearly every transport area including the marine industry, the underground railways, shipping and offshore, buses and road freight.
Routes operated by Southern rail along the South coast from Southampton Central to Brighton, from Littlehampton to Gatwick and London, Worthing to London, Brighton and Hove area to London, Seaford to London, Eastbourne to London, Eastbourne to Ashford International, rail services along the Sussex and Kent coast, Tonbridge in Kent to London, Sevenoaks to London.
Alternative rail services: From Southampton Great Western run a service as far as Portsmouth.
Ticket advice from network rail: If you have a ticket booked for a journey that involves travelling on the Southern Rail network on one of the strike days, we will be happy to give you your money back. If you decide not to travel, you can get a refund from the company from which you bought the ticket. Alternatively, you can travel on the first non-strike day after your booking though we may not be able to guarantee you a seat as trains are likely to be very busy. Please note: your tickets will only be valid on the first non-strike day after your original booking.
How to claim a refund for a delayed or cancelled journey: If you journey is cancelled or delayed by more than 15 minutes (but only if due to strike action rather than engineering works) you may be entitled to compensation. The train companies each have passenger's charters and these explain what you can claim and how to claim it - normally via an online link. Compensation depends on who operates the rail service you are travelling on. More details can be found on this page on the National Rail Enquiries website
The important thing is to retain your train ticket and keep an accurate note of the problems you had on the journey. Let us know how you get on with any refund claim - email our Transport Correspondent, Mike.Pearse@itv.com
SOUTHERN RAIL provide train services for commuters, airport users, business travellers and general passengers on the South coast, through East and West Sussex, Surrey and parts of Kent and Hampshire, south London, between central London and the South Coast.
They manage 156 stations with their two principal London stations being London Victoria and London Bridge. They operate a fleet of around 300 new or refurbished trains.
Normally they provide 2,242 services on weekdays with 2,076 on Saturday and 1,242 on Sundays - according to their website.. They estimate they carry 165 million passenger journeys over 414 miles of track on the Southern network .
On a normal weekday around 600,000 passenger journeys are made. The company has 4,000 staff, most of whom work at our stations and on our trains