Hi all.
After searching online for ages to find how to stop my photos backing up on onedrive.
I've finally figured it!!!!!!
So for clarification, my onedrive setting for syncing was already turned off and it said there's no device for backup connected ect, yet it would still back up my photos......
It's not onedrive.....its your phones settings.
I went onto my phones photo gallery and on to settings and there it was a "backup to onedrive" setting. Which i turned off and its stopped haha.
I hope this helps someone.