The May 2026 issue of Railway Modeller celebrates several significant anniversaries, with a special commemorative booklet to mark 80 years of Peco. It is also 150 years since the birth of Sir William Stanier, the celebrated Chief Mechanical Engineer of the London Midland & Scottish Railway, for which Garry Hall describes how he modelled Stanier's streamlined Princess Coronation Pacific locomotive and the 'Coronation Scot' express train of 1937 in the new TT:120 scale, while we provide TT:120 scale drawings of these locomotives in their non-streamlined form which Stanier himself preferred! Finally, Jackie Kneeshaw, Chairman of the Gauge O Guild, marks the 70th anniversary of that organisation with a special Milepost feature. 

Railway of the Month is Aston Cote, an OO gauge model of a proposed but never built rail link between Fairford and Cirencester in Gloucestershire, built by John Rose in the style of the well-known Pendon Museum layout. Other layouts featured include The Yard (a 7mm scale industrial scene with working remote-control cranes and lorries); Project New Street, an OO gauge cameo of part of Birmingham New Street station which won the 2025 Peco RAIL200 Model Layout Competition; and an OO9 cameo of the Ffestiniog Railway Boston Lodge engine shed, which can portray several periods in the line's long history. 

Leading the new product reviews this month is the Hornby Dublo Deltic diesel in OO, featured on the magazine's cover, while other reviews include Evolution bogie coaches in OO from Rapido Trains UK, the Class 13 'Master and Slave' diesel shunter from Bachmann in OO, and North Eastern Railway hopper wagons both in OO by Accurascale and N by Graham Farish/Bachmann.