Twenty five trains travelling through Reading have been cancelled today to reduce the chaos caused by overrunning engineering works.
The rail operator First Great Western is being forced to pay compensation to passengers after almost 20% of its trains were late.
One in five of the rail operator First Great Western's trains has arrived late according to new figures.
Thousands of first class seats are to be ripped out of trains in the Thames Valley and converted for use by standard class passengers in a radical move to ease overcrowding.
Passengers have long complained that first class carriages are empty while commuters are packed into standard class.
Now an agreement has been reached with First Great Western and the Government that will mean an extra 3,000 seats a day. The work will be complete by next summer and cost £13 million.
It is one of a number of measures - including extra carriages - to provide more capacity at the busiest times.
The severe winter storms took their toll on train punctuality last month, according to the latest official figures. A total of 87.1 per cent of trains ran on time in the period 2nd February to 1st March, compared with 91.1 per cent in the same period last year, Network Rail said.
Some train companies were able to maintain near-100 per cent punctuality records, but others were badly hit by the extreme weather which wrecked south and south west England services. Southern ran only 77.1 per cent of trains on time last month - well down on 88.5 per cent for February 2013.
First Great Western, affected by the severe damage to the coastal track at Dawlish in Devon, had a trains-on-time figure of only 80.4 per cent, compared with 91.8 per cent in February 2013.
Network Rail said Southern was affected last month by multiple landslips and flood sites.
Travel advice for Saturday 15 February: **
One train an hour between Birmingham Moor Street and Leamington Spa departing Birmingham at 15mins past the hour. One train an hour between Banbury and London Marylebone. The trains will depart London at 36 past the hour
There may be some last minute delays and cancellations as a result of the landslip. If you are travelling north of Banbury, we are advising to travel with Virgin Trains between London Euston and Birmingham New Street and then take services south.
Chiltern Trains are running a bus replacement service between Banbury and Leamington Spa and Cross Country are running a bus replacement service between Coventry, Leamington Spa and Banbury
Ticket restrictions have been lifted across our network until Friday to help you plan your journey.
Please see http://t.co/aK1XUy6O3o for info on our amended service plan today. We strongly advise not to travel unless absolutely necessary.
Major disruption to service this morning & we advise not to travel unless absolutely necessary. Please see http://t.co/aK1XUy6O3o for info
Major disruption this morning. Please see http://t.co/INbEQTGzoc for our service plan. Advice is not to travel unless absolutely necesary.
Disruption on First Great Western between London Paddington and Reading due to flooding between Maidenhead and Twyford . London Underground are accepting tickets for reasonable routes.
Trains may be delayed by up to half an hour, and some trains may be cancelled. This could be ongoing for the rest of the day.
Due to substantial disruption caused by flooding, ticket restrictions are lifted on Monday 10th February for all journeys on FGW services.
Disruption on First Great Western between Oxford and Didcot Parkway due to flooding between Oxford and Radley. Tickets being accepted on Chiltern Railway services. Heavy rain has caused flooding to the South of Oxford.
First Great Western will operate a limited service through the area, but trains won't call at Culham or Appleford. A bus service is running between Oxford and Didcot Parkway, calling at these stations.
There's a signal fault in the Didcot-Reading area. This is causing delays of approx 15 mins. Network Rail are in attendance. #Pangbourne
Due to problems with the track, there is disruption on First Great Western between Windsor and Eton Central and Slough. Speed restrictions have been implemented with the likely of delays and cancellations. There is no estimate for when a normal service will resume.