Update on the BT couple! There's 3 different adverts on the radio now, I've heard them all this week. There's one where the guy (what's his name again?) phones his dad and says "Dad, you know how you always said to trust instinct..." and his dad butts in and says "not reason", then he continues saying "well, I've got some really good news". I think that sounds more likely that they're engaged rather than having a baby.
Thought I'd update you all as I'm sure you were thinking about it still...