Each was broadcast live from a theatre in London and followed in the tradition of earlier variety spectacles such as Sunday Night at the Palladium.
During the second series of Live from Her Majesty's on 15 April 1984, comedian Tommy Cooper collapsed and died after suffering a massive heart attack.
The show continued after an earlier than planned commercial break and after Tarbuck was reportedly informed Cooper was recovering.
Backstage, while the show continued with Howard Keel's performance, paramedics frantically attempted to revive Cooper, but he was pronounced dead on arrival at Westminster Hospital.
His death was not officially reported until the next morning, although the incident led the ITN News bulletin which followed the show.