Morris Cowley's fixed distance signal has certainly seen better days! Barely a trace of yellow paint is left and a missing spectacle glass and oil lamp show up years of neglect as 54224 leads the Hertfordshire Railtours 1Z22 'Chinnor Tonic' railtour past Blackbird Leys on 6 August 1988. This tour, which had started from Marylebone at 09:26, had earlier visited Chinnor, Thame and Quainton Road, before traversing the freight only Morris Cowley branch from Kennington Junction. It is pictured here heading back to Kennington Junction. The unusual stock formation consists of 54224 (Class 108), 51893 (Class 115), 54213 (Class 108), & 51895 (Class 115)!