Its obvious that some WG's are putting British in anyway, it's possible of course they have applied for and got a British Passport.
The AW nationality is taken from your nationality written on the passport.
So they cannot claim to be Spanish, or British on that section if they are not on their passport. If they are Romanian and applied for a British Passport I would be amazed if we just dished them out freely.
The only other thing to add is on this
Rather than exclude......Select include and British
You will only get verified profiles with this. So any AW profile that has not went through the verification process wont show up on your results at all. Many-many girls never bother to verify their AW profile.