Patrick Macnee had difficulty getting back into character as Steed. After being confronted with this by producer Albert Fennell, he found inspiration by watching Benny Hill spoofing The Avengers on his TV show.
Purdey's character was originally called "Charly", but this was changed when it was realized that there was a perfume with the same name. It is rumoured that Joanna Lumley suggested the name Purdey, after the most expensive and revered shotgun in the world.
The last four episodes were made in Canada, under a production agreement that kept the second season afloat after the French co-producers failed to come up with all the promised finance. These episodes, dubbed "The New Avengers in Canada", are considered the worst of the series. Brian Clemens said "Canada is the worst place to film anything, it's such an empty sort of nothing. I'd rather have shot them in Los Angeles, which at least has an identity, but Canada always looked like Milton Keynes with snow."
The opening credits for the first 7 episodes of series one were edited out the first five episodes of the series, mainly "The Eagle's Nest" and "The Midas Touch". However, one shot featuring Joanna Lumley with long hair and Gareth Hunt in jeans was actually from their combined screen-test instead of an episode. From episode 8 onward, animated opening titles were used.
Diana Rigg, co-star of the original Avengers, declined an invitation to appear on the new series. Instead, archive footage from the The Winged Avenger and From Venus With Love was used in one episode (K is For Kill Part One - The Tiger Awakes) to allow Emma Peel to make a guest appearance.
With Skyfall (2012) and Spectre (2015), Ralph Fiennes became the 007th [= seventh] major actor or actress who has appeared in both the 'James Bond' and 'The Avengers' universes, the latter being the English spy one and not the comic super-heroes one. From the original television series The Avengers (1961), three actors appeared in Bond movies: Honor Blackman played Pussy Galore in Goldfinger (1964), Patrick Macnee portrayed Sir Godfrey Tibbett in A View to a Kill (1985), and Diana Rigg played Tracy Di Vicenzo in On Her Majesty's Secret Service (1969). The latter film also featured as The English Girl actress Joanna Lumley who would later appear in The New Avengers (1976) which also starred Macnee. Whilst Nadim Sawalha appeared in both The Avengers (1998) cinema film as well as two Bond movies: The Living Daylights (1987) and The Spy Who Loved Me (1977). Fiennes actually appeared in The Avengers (1998) cinema movie co-starring with former James Bond Sean Connery who played the villain Sir August de Wynter. Of these seven actors, both Fiennes and Macnee have portrayed The Avengers' character of John Steed, in the theatrical film and television series respectively, with the latter also voicing the Invisible Jones character in The Avengers (1998) cinema movie. In this 1998 cinema film, John Steed (Ralph Fiennes) and Emma Peel (Uma Thurman) get across the frozen river by 'walking' on the surface inside inflatable plastic bubbles which is similar to how James Bond gets aboard Ernst Stavro Blofeld (Charles Gray)'s oil rig in Connery's final official series Bond movie Diamonds Are Forever (1971).
In 1975 French producer Rudolph Roffi arranged a champagne-commercial with Patrick Macnee and Linda Thorson. He really thought, that The Avengers were still in production. Learning this was a wrong, he was determined to revive the show. The result was The New Avengers.