You will notice Season 1 has ten episodes while Season 2 has twelve.
This is because at the time that Season 1 was being broadcast the actor John Bindon, who was playing a gangster in the episode "Hazell and the Public Enemy", was up at the Old Bailey on trial for the murder of Johnny Darke in a pub in Putney (improbably named Ranelagh Yacht Club).
At the request of Bindons defence team, who felt that a jury might confuse the character with Bindon in real life, Thames Television 'pulled' the episode from the schedule.
During the trial fellow actor Bob Hoskins was one of those who appeared as a character witness for Bindon.
By the time Season 2 of Hazell was broadcast, Bindon had been acquitted of the murder, so Thames just tagged the episode "Hazell and the Public Enemy" on to the end of Season 2.
