Thameslink season ticket holders have until the end of this month to claim up to a month’s worth of fares as additional compensation after the May timetable chaos.

Govia Thameslink Railway (GTR), which runs the service, is urging those travelling from the most affected stations, from between May 20 and July 28, to apply.

This can include Thameslink lines which run from St Albans and Sutton, as well as Wimbledon and Sevenoaks.

Services between London and the Sussex coast, as well as parts of Surrey, Kent and Hampshire are also all run by GTR.

READ: Sacking Southern is still an option, says rail minister Jo Johnson

The train company’s chief executive Patrick Verwer said: “I would urge affected season ticket holders to claim through our website while the scheme is open.”

It comes as Southern Railway, which is operated by GTR, is being investigated by the Government’s rail regulator Office of Rail and Road (ORR).

READ: GTR probed over passenger information during May timetable chaos

Alongside Northern, the pair of services are accused of breaching a condition of their operating licence during the May fiasco.

But GTR has insisted that the reliability and frequency of services have "improved since May", with more than eight out of 10 trains arriving on time.

That's alongside 200 additional services being in operation.

GTR also plans to open the scheme to regular travellers, such as part-time workers, who didn’t have a season ticket during the fiasco earlier this year.

Passengers who made a minimum of three days’ return during any one week can qualify.

But those who don’t have their tickets from that period can show proof a different way, while further information is available on the train company’s website.

You can find more information about it here.