The Government has defended its track record on rail fares and promised to announce further measures to ensure "greater fairness" for travellers.
A Department for Transport spokesman said the Coalition were investing "record amounts" in the railways and recognised current prices were "tough".
The Government is investing record amounts into our railways, which will help deliver economic growth, improve performance and significantly boost passenger capacity.
However, we also recognise it is tough for passengers. That is why we are already limiting these rises by capping the average regulated fares increase at 1% in real terms and will be announcing further measures to ensure greater fairness on fares for passengers later this year.
Train fares are set to rise yet again on the back of the release of July's inflation figures, forcing rail passengers to fork out more for travel in 2014.
Inflation as measured by the retail prices index (RPI) is expected to remain at 3.3 percent for July, giving train companies the opportunity to push through a price rise of 4.3 percent at the beginning of next year.
The Government determines rail price rises by allowing fares to rise one percentage point above July's RPI measure.
Rail passengers were already dealt a blow with 2013 prices. This year the cost of a season ticket rose by 4.2 percent and overall train fares increased by around 3.9 percent.
First Great Western have just told us that buses are in place for travel between Swindon to Didcot, Swindon to Gloucester and Bath to Swindon, should passengers want to use them. There are reduced services running between Cardiff and Bristol to Paddington, with trains diverted via Newbury.
ITV News journalist Guy Phillips has just sent us the latest on his attempt to go to Wales. We "We are now boarding a train back to Reading. Great Western hope to get passengers from Reading to Wales via Bath - the long route."
Passengers trying to get to Cardiff are now heading from Didcot back to Reading. Those going to Swindon and Bristol are awaiting a fleet of buses to help them reach their destination. Trains from Reading to Wales will go a long route.
ITV News journalist Guy Phillips is stuck at Didcot Parkway in Oxfordshire. His train has been terminated at Didcot. First Great Western Trains have promised buses to Swindon but Guy has been told many as buses are on the school run. Some passengers are heading back to Reading.
The power failure in the Swindon area has brought rush-hour trains between London, the Thames Valley, Wales & the Westcountry to a standstill. ITV News journalist, Guy Phillips, is one of thousands of passengers affected. He's just sent us this update.
The 7.11 from Reading to Swansea has been at a standstill at Didcot Parkway for 40 minutes due to amajor power failure. The guard on the train tells us "There is major signalling problems due an electrical fault. The only information we have is to stay here until it has been resolved."