ITV Schools on Channel 4 (yes, really!) - June 1987
A rarity here. Before the official moving of Schools programmes to Channel Four, they transmitted the morning's programmes on Channel Four a couple of times during Summer 1987 (ITV were showing General Election broadcasting or something similar).
This is the standby junction into schools programming on Thursday 25 June 1987. Rather than playing a 'standby edit' of the track Nothing Doing at 9:28am, Channel Four simply backtimed it (unlike ITV). Note also the different font in use for the programme title caption on the clock. Channel Four dug out this schools slide a year or two later during a breakdown.
Other notable differences from the ITV presentation were that there were no 'publication announcements' before the programmes (mentioning associated booklets etc) and the out-of-date versions of the YTV logo were shown on some programmes (these were replaced live with the Liquid Gold ones on ITV). Regional variations for STV and UTV viewers were shown at the end of the morning's programmes, meaning schools programmes ran until after 12 noon that morning!