Yes, there were too many loose ends. Good fun though.
I reckon the egg issue was a mix-up at the Clinic - wrong egg, or an admin error and the egg was, in fact, Dan's, so Dan's baby after all.
They were in a different house at the end, but does that mean that Dan's business went under? Maybe not. If he'd laundered money to start the business, there'd be an investigation into that, and that would take time. The baby was still quite young when we saw her at the end.
I assume the sister's partner left; could it have been her house they were shown in?
Other things I didn't get:
- was Dan's wife working or not? She seemed to drift about aimlessly a lot.
- what was David Hayman's role? Promising character, but didn't amount to much.
I enjoyed Martin Compton in this - nice to hear his Scottish accent rather than the SE one he adopts for Line of Duty.