Originated the now-customary character of Robin Hood's Saracen companion - due to Mark Ryan's unintentional permanent addition to the cast. Every new version of Robin Hood made since has included a Saracen character - or even sidekick.
The two different Robins in this series accurately reflect the two different (and otherwise irreconcilable) Robins that appear in the original legends: the lowborn woodsman (Robin of Loxley) and the outlawed nobleman (Robert of Huntington). By having one be the successor to the other, the series cleverly manages to incorporate all the traditional but contradictory traits attributed to Robin Hood.
Television standards decreed that people could only be hit by arrows in the back or in the front, never in the face. A shot in the thigh was a margin. Likewise, only side swiping was allowed during sword fights, never a full on thrust.
First series director 'Ian Sharp' used an effect during a zoom by freezing and skipping frames for one shot in the opening credits. His successor Robert Young loved it so much he started to use it all the time.
Clannad never actually looked at the episodes or spotted any music before recording their score. Instead, producer Paul Knight visited them in Dublin about once a year to fetch about an hour worth of music to use in the series.
Before he joined the series, Jason Connery had a guest role in Doctor Who (1963) in the 1985 story Vengeance of Varos, where he played a character called Jondar, a rebel prisoner. Forbes Collins whom played the Chief Officer in that story later played King John in Maid Marian and Her Merry Men (1989), which was a parody of the legend of Robin Hood.
At the conclusion of Season Three, Goldcrest was forced to pull out of the venture, due to a downturn in the fortunes of their film arm. Goldcrest had been responsible for critical and commercial hits such as Chariots of Fire (1981) and Gandhi (1982) earlier in the 1980s, but had hit a lean period with such films as Revolution (1985) and Absolute Beginners (1986). The series was expensive to produce; HTV could not afford to finance it alone, and so the series came to an unexpected end.