The 2025 National Development League and National Trophy was the third division/tier of British motorcycle speedway for the 2025 season. It was a semi-professional development league, containing mainly the junior sides of SGB Premiership and SGB Championship clubs. Leicester Lion Cubs were the defending champions having won the title in 2024. The league was sponsored by the World Speedway Riders' Association.
The same six clubs that competed for the 2024 National Development League Championship returned for the 2025 edition. However, an additional competition called the National Trophy was added where five other teams would take part. The league and trophy points limit was set at 38.
Oxford Chargers won the title by a single point from Monarchs Academy, with the bonus point from the meetings between the clubs proving decisive. It was the second time in three years that Oxford were crowned champions.
King's Lynn Young Stars won the debut National Trophy title, dominating the league and winning by seven points.
The National League Riders' Championship did not take place in 2025.
Minimum 2 matches
NDL