My husband lives in leeds and right now I live in london. I haven’t permanently moved to leeds. Would I be able to fast some days in leeds (if I travel for a couple of days)?

No you would have to break your fast in Leeds. If you move to Leeds and live there and it becomes your hometown, then you’d fast there even if you stay there for a couple of days. But until then you’d have to break your fast there if you stay there less than 10 days.