I've now got the amended programmes schedule from the BBC of the night.
It makes interesting reading. Most of the programmes scheduled did get shown, only The Dick Van Dyke Show and Top in Television, (a TV awards show), didn't get to air.
the schedule was as follows:
18.00 News 18.30 Weather 18.34 Trailer: Here's Harry 18.35 Look: Fish Families 19.00 Trailer: Britten At Fifty 19.01 Points Of View 19.04 News Flash - President Kennedy Wounded (John Roberts) 19.06 Tonight 19.26 News Flash - Death of President Kennedy (John Roberts) 19.28 BBC Graphic/Silence 19.32 News Flash - Death of President Kennedy (John Roberts) 19.33 Graphic/Music 19.41.04 News Flash (John Roberts) 19.41.24 Graphic/Music 19.47 News Flash (John Roberts). Live Washington insert by Leonard Parkin 19.49 Graphic/Clock/Announcement 19.50 Here's Harry: The Musician 20.14 Graphic/Special Announcement 20.15 News Flash (John Roberts). Live Washington insert by Leonard Parkin 20.19 Dr. Finlay's Casebook: The Face Saver 20.59 Graphic/Special Announcement 21.00 Dr. Finlay's Casebook (cont.) 21.09 News (John Roberts) Leonard Parkin Washington Report and Joseph Harsch on what death means to Americans 21.26 Weather 21.27 Special announcement 21.27 Filler - Recital - Andor foldes 21.34.39 Blank screen 21.34.42 clock announcement 21.35 Britten At Fifty 22.43 Clock/Special announcement 22.44 Filler: Vienna Soloists 22.59 Clock 23.00 Tribute to President Kennedy. Intro and links by Ian Threthowan and included tributes by Sir Alec Douglas-Home, Harold Wilson and Joe Grimmond 23.30 Graphic 23.31 News Extra (John Roberts) 23.55.10 Graphic 23.55.21 Epilogue read by Father Agnellus Andrew 23.59 H.M Queen caption and National Anthem 00.00.38 Close down