Season 2, episode 20.
Original air date: 11 February 1957.
A young prince, who is the righful heir to the throne of England, has fallen into the clutches of his uncle, the evil Prince John. Robin and his men set out to develop a plan to rescue the young boy.
Cast: Richard Greene (Robin Hood), Alexander Gauge (Friar Tuck),Bernadette O`Farrell (Maid Marian), Archie Duncan (Little John), Alan Wheatley (Sheriff of Nottingham), Donald Pleasance (Prince John), Peter Asher (Prince Arthur), Dorothy Alison (Duchess Constance), Victor Woolf (Denwent), Peter Bennett (Edwin), Shaun O`Riordan (Prince John`s Captain), Edward Mulhare (Courtier), Martin Lane (Spy) and Fred Goddard (Cedric: uncredited).
From IMDB.

Another amusing episode of "The Adventures of Robin Hood". This series was hugely popular both then and now. The show was produced on film, at a time when almost all British TV was live and recorded via telerecording (AKA "kinescope").

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Big W!

In this episode, young Prince Arthur and his mother face constant attempts at being killed by Prince John and his men (at one point, Arthur is nearly forced off a cliff). A scheme is started to have him killed by men pretending to be Robin's men, while Robin's men are on a wild goose chase. Robin saves Prince Arthur just in time. He decides to join the Prince and his mother on their trip to safety, along with Friar Tuck (who is convinced to go with the offer of French Food).
GOOD FUN!!
The next episode is a direct sequel, which is unusual for this series.