Bristol was intended to be the first of a class of large destroyers to escort the CVA-01 aircraft carriers projected to come into service in the early 1970s but the rest of the class and the CVA-01 carriers were cancelled as a result of the 1966 Defence White Paper which cut defence spending.
Following a long career which included the Falklands War, she was converted into a training ship in 1987. In 1991 while part of the Dartmouth training squadron, she suffered a Olympus gas turbine failure that damaged the power turbine. The damage was beyond economical repair and no longer having enough value to be sold to another navy, she became a Harbour Training ship at HMS Excellent. She was decommissioned in Portsmouth on 28 October 2020.
https://www.wikiwand.com/en/HMS_Bristol_(D23)