Originally Posted by
angatol
Yes, but they only prohibit (or at least attempt to) if you're trying to avoid a minimum stay restriction, which the OP isn't anyway.
Where do they prohibit it? I can't see anything written anywhere in BA's terms and conditions that says they prohibit it.
Two separate tickets, if one has a minimum stay restriction, you can't take the return on *that* ticket until the time has passed, they can't stop you buying another ticket in the opposite direction before *that* return.