Hi,
I have tried to create a page with a form attached, by editing my live site.
I now have the form showing in the header of every page and I cannot find a way to remove / delete it.
I am worried that if I need to save changes for anything else, this rogue form will update on every page.
Was it in a global area? It’s possible that it’s still lingering approved. Visit /dashboard/blocks/stacks/view_global_areas, find the offending global area and be sure it’s removed from there before approving changes. It may not be there but you’ll notice the global area needs changes approved…
Thanks Justin,
That worked, so simple when you know how! 
Cheers
Dean
