This aerial has a female connector!
Focus' of the year stated in the description have 2 possible connections, one male, one female, even if they don't have the sat nav option in the car as I found out to my surprise.
The seller was quick to respond and does stock the correct item and sent a pre-paid return envelope for me to send this item back. My only dissatisfaction is that I paid for delivery of the wrong aerial in the first instance when, according to the description, it should have fitted my car. Other than that, Ford Parts were very helpful.