From 26 November 1928 two trains were provided at peak hours, with Hartwell opened as a crossing station eight days before to permit this. A signal frame was provided on 8 December 1938 due to increased traffic. Through trains to the city at peak hour were provided from 17 May 1934, though some through trains from the Kew line were deleted to provide train paths to the city. From 3 October 1938 the daytime off peak frequency was improved to 15 minutes.