i) births and deaths

27 June 1991: death of Milton Subotsky, who produced and wrote Dr. Who and the Daleks (1965) and Daleks – Invasion Earth 2150 AD (1966), the two cinema films starring Peter Cushing as Doctor Who.

ii) broadcast anniversaries

27 June 1964: broadcast of "The Unwilling Warriors", second episode of the story we now call The Sensorites. The Sensorites threaten to take Susan to their own planet as a hostage.