The motorcycle attempting to run down Mrs. Peel is a Triumph 250 single.
Outside the barber shop a Daily Mail plackard read "Where is Blake?" In 1961 the British spy (but secretly a double agent for the KGB) George Blake was identified as a traitor and sentenced to 42 years in prison. In 1966 he escaped; when this episode was made Blake's location was a mystery.
Josino goes to the shop of "T. Sweeny, Shaving a Speciality". Sweeny Todd, the deamon barber of Fleet Steet, was the homicidal villain of an 1847 storey 'The String of Pearls'. Sweeny's tale of maniacal vengence has been done on stage, radio, film and TV
Diana Rigg and Peter Bowles star together fifty years later in the television production of Victoria.
Peter Bowles and Geoffrey Bayldon previously worked together in S5E18 "The Art Collectors" of The Saint, broadcast 27 January 1967.