The 1920s also saw an upsurge in holiday traffic, as Britain recovered from the war and tourism gained in popularity. The Talyllyn saw summer passenger numbers grow significantly and regularly had to supplement its formal passenger stock with slate wagons fitted with planks as seats. An unusual tourist service offered by the railway was to hire a slate wagon, which would be left at Abergynolwyn. At the end of the day the tourists would return to Tywyn in the wagon, powered by gravity. This service was discontinued in the early 1930s. The additional income from the tourist trade defrayed some of the costs of operating the railway, but never enough for it to make a profit during Haydn Jones' ownership.