Frank Windsor (born Frank W. Higgins; 12 July 1928 – 30 September 2020) was an English actor, mainly on television. He was born in Walsall, Staffordshire. His career began in 1959. His most famous role was as Detective Sergeant John Watt in "Z-Cars" from 1962-65. He also starred in its spin-offs "Softly, Softly" and "" from 1966-76.