Source: Louder.
There are two things worth knowing about the 70s Canterbury scene. One is that many of its major players are not actually from Canterbury. The other is that there is/was no such thing as a ‘Canterbury scene’, according some of the people who were in it.
However, even those who say the scene never existed would agree that the tree from which the music blossomed was Wilde Flowers, which included all four original members of Caravan. Following branches from Wilde Flowers will lead you to just about every Canterbury scene band/artist of note.