A fleet of 25 new trains servicing Welwyn Garden City and Stevenage to and from London are being rolled out by Govia Thameslink Railway (GTR).

The £240 million fleet of modern six-carriage Siemens Class 717 trains will replace the 40-year-old trains that run on the Great Northern routes between Moorgate and Hertfordshire.

The 150 new carriages are being introduced between now and late summer as GTR replaces mainland Britain’s oldest electric trains, which first entered service in 1976.

GTR engineering director Gerry McFadden said: “We are transforming our passengers’ journeys by replacing their cramped, outdated 40-year-old trains, which are the oldest electrical units in mainland Britain, with fully-accessible, spacious, modern, air-conditioned units with the latest in passenger information, onboard Wi-Fi and power points at every pair of seats.

“GTR is at the forefront of rail modernisation having introduced more new trains into passenger service in the past three years than all other operators in the UK combined.”

Welwyn Hatfield Times: On board the first Class 717 train to be rolled out by Govia Thameslink Railway on Great Northern routes between Moorgate and Hertfordshire. Picture: Govia Thameslink Railway.On board the first Class 717 train to be rolled out by Govia Thameslink Railway on Great Northern routes between Moorgate and Hertfordshire. Picture: Govia Thameslink Railway. (Image: Archant)

Rail Minister Andrew Jones said: “The arrival of the brand new Class 717 fleet, replacing some of the UK’s oldest trains and delivering more seats and space, complete with Wi-Fi and air-conditioning, is fantastic news for passengers.

“With the number of journeys on our railways having more than doubled in the past 20 years, we are focused on introducing new trains right across the UK, delivering significant improvements in performance, punctuality and capacity.”

Managing director for rolling stock at Siemens Mobility Limited, William Wilson, said: “Siemens has built these trains with one goal in mind – to transform passenger journeys to and from London by ensuring that services are reliable and offer as much space as possible.

“The Class 717 has modern carriages with increased capacity for passengers and is equipped with air cooling, Wi-Fi and power points.”

Welwyn Hatfield Times: On board one of the old Class 313 trains, which are being replaced by Govia Thameslink Railway. Picture: Govia Thameslink Railway.On board one of the old Class 313 trains, which are being replaced by Govia Thameslink Railway. Picture: Govia Thameslink Railway. (Image: Archant)

The new trains are financed by Rock Rail Moorgate, a joint venture between Rock Rail and Aberdeen Standard Investments, and will be leased to GTR.

Rock Rail CEO Mark Swindell said: “These trains are designed to deliver a vastly improved passenger experience and represent the first time in the UK that a fleet has been financed with direct long-term investment from pension and insurance companies.

“Rock Rail is proud to be working with Govia Thameslink Railway and Siemens to drive better value for the UK tax payer and government and to deliver step changes in improved capability, capacity and travelling experiences for passengers on the Great Northern routes.”

Welwyn Hatfield Times: One of the new Class 717 trains being rolled out by Govia Thameslink Railway departs Gordon Hill. Picture: Govia Thameslink Railway. Picture: Govia Thameslink Railway.One of the new Class 717 trains being rolled out by Govia Thameslink Railway departs Gordon Hill. Picture: Govia Thameslink Railway. Picture: Govia Thameslink Railway. (Image: Archant)