Angry commuters fed up with months of cancellations and delays - put their grievances directly to rail bosses at a public meeting today.
It was called by Hove and Portslade MP Peter Kyle who wanted Southern operators - Govia ThamesLink - to hear first hand the impact poor service is having on thousands of train users.
Sarah Saunders reports.
Plans for major changes to ticket offices for Southern and Thameslink trains are being opposed by Transport Focus, the official Government watchdog for rail passengers.
The company that runs the trains says it wants more staff to be visible on platforms where they can also sell tickets.
Around 80 stations would be hit - including many in Sussex and Surrey.
But unions have claimed the move would be closing booking offices by the back door, and fear it would mean a worse service for passengers.
ITV Meridian spoke to Sara Nelson from Transport Focus.
The new Thameslink trains depot serving Sussex and Kent will be opened today by transport secretary Patrick McLoughlin.
The depot at Three Bridges will be the home of a new generation of trains and create hundreds of jobs.
Network Rail is facing a fine of £2 million after passengers suffered weeks of chaos on Thameslink and Southern services and delays at London Bridge.
Independent regulator, the Office of Rail and Road (ORR) made the decision after investigations into the company's Southern, Govia Thameslink services in 2014-15.
ORR found that Network Rail had breached its licence, with significant delays and cancellations to services.
However, the rail company has the opportunity to offer reparations for affected passengers, instead of having to pay the fine.
Thameslink rail services will be cut to almost a quarter of the normal evening peak today, and off-peak services are already reduced in half, due to deep flooding from a burst water main between Farringdon and St Pancras International in Central London.
Some trains are continuing to run safely through the tunnel as Network Rail pumps water in a bid to maintain it at a steady depth, but there are major delays.
It is understood that water company engineers need to isolate the leak without cutting off essential supplies to a nearby hospital.
Thameslink plans to run half hourly services between Bedford and Brighton. Sevenoaks-bound Thameslink services will start and terminate at London Blackfriars.
More details at thameslinkrailway.com
A new contract has been signed for Bombardier to provide another 116 train carriages - for use on the Thameslink service through London. The first fleet of carriages will be used by Southern at the end of this year.
A massive programme of railway upgrades has been announced in our region. The full £9.4bn programme of improvements to the rail network 'will meet the needs of intercity passengers, commuters and freight up to the end of this decade' while the Government continues to work on High Speed 2.
Schemes include electrification between Southampton and Reading; Paddington to Newbury, Banbury and Swindon; Reading to Basingstoke; Maidenhead to Marlow; Slough to Windsor. A major development at Waterloo will take longer trains from the South.
Oxford Station will have a substantial upgrade. The line from Oxford to Bletchley will be reopened.