Celebrating 40 Years of Network SouthEast (NSE)

Building on the success of the past two years, the gala will showcase a varied line-up of visiting and home-fleet locomotives, intensive timetables, and the unmistakable sights and sounds of classic diesel power in action.

Visitors can expect a busy programme featuring multiple locomotives operating across the line, rare pairings, demonstration freight services, and the opportunity to travel behind locomotives representing different eras of British diesel development. Previous galas have attracted enthusiasts and families alike, combining authentic railway operation with a welcoming atmosphere throughout the railway.

Alongside the 2026 Diesel Gala, the Bluebell Railway is delighted to celebrate 40 years of Network SouthEast (NSE). Horsted Keynes will form the centre of these celebrations, serving as the main hub for displays, exhibits and themed activities throughout the gala weekend.

Launched in 1986, Network SouthEast introduced a bold and distinctive identity to commuter and regional rail services across London and the South East. Its red, white and blue livery quickly became iconic, symbolising a period of modernisation, investment and renewed pride in railway travel. NSE services operated extensively across Sussex and the wider South East, forming a familiar part of everyday life for commuters, holidaymakers and rail enthusiasts alike. Many visitors to the Bluebell Railway will have fond memories of travelling on these services, making this anniversary particularly meaningful for the local area.

Plans are underway to feature themed displays, historical interpretation and exhibits celebrating the impact and legacy of Network SouthEast. With its period charm and versatility, Horsted Keynes provides the perfect setting to bring this memorable era of Britain's railways back to life during the gala.