On the other hand this one is too loose as there is nothing in the locator to distinguish this between submit or cancel.

I would rather not use `.two-up` here as if they change the design of the page (again) then this class will change. The two denotes the two columns so it's design sensitive. We want a locator that's not as sensitive to the design. I would use something like `button[type='submit']` or if you think that's too vague you cna make sure it's a child of the compose form.