Using these patterns
Each set of instructions here belongs to whoever first published it. Stitch Round reproduces them; it does not own them. So the sensible position is this: make what you like from them, and ask the original publisher before you do anything commercial.
Make as many as you want for yourself, for presents, for charity. Nobody has ever objected to that.
Selling the finished pieces: ask the pattern's publisher. Four of these pages link to theirs. For the fourteen that carry no source link, permission cannot be passed on when it was never given, so treat those as personal use until somebody says otherwise.
Do not copy the instructions onto another site, into a PDF, or into a video description. Link to the page instead. That is the one thing that actually costs a designer something.
The photographs on these pages came with the patterns. Do not reuse them.