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 sideswiping was allowed during sword fights, never a full on thrust.
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.
Nottingham Castle is the same castle that was used in a future Robin Hood movie --- Robin Hood: Prince of Thieves (1991).
First-season 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.
The show was shot on film and almost entirely on location, mostly in the northeast and southwest of England; HTV West in Bristol was the base of operations, and most of the filming was done in and around Bristol and its surrounding counties, where all the trees still sported leaves of the period, as opposed to Fir trees brought to England in the nineteenth century. Primary locations were the Blaise Castle Estate and Vassells Park. Some of the forest scenes were shot near Bradford-on-Avon.