The flagship of the Roe composite body range was however exclusively built on AEC Regent III; this was the Pullman body, the only Roe bus ever to be named. The prototype – a Leeds bus to the specifications of W. Vane Moreland – with its deep windows and four window bays rather than the then standard five had looked ultra-modern when shown on a pre-war Regent at the 1937 Commercial Motor Show in London, it is an acknowledged influence on the London Transport designers whose RT1 appeared two years later with similar construction and outline.