We're back on the labour ward at Leeds General Infirmary where another two couples are due to procreate on camera for One Born Every Minute (Channel 4). "Everybody that comes here looks pregnant," says Richard, one of the imminent dads. That's kind of what labour wards are all about, Richard. It's why your wife Leah has a massive bump and is moaning.

"I don't like to describe labour as painful," says one of the midwives. "I try to be realistic; it's not without pain, but it's more a powerful experience."

Yeah, whatever, Leah's having none of that. "I don't care, I just need an epidural," she says. "I'm entitled to one." Trouble is, she's not dilated enough for an epidural, so they put her in the bath instead. From the room next door comes the sound of a baby crying. "Probably just been born," says Richard, who finally seems to be getting the hang of what this place is all about.

At least Leah and Richard have God on their side. You'd have thought God would have made the whole process of childbirth a little less arduous and terrifying. But perhaps he can provide some spiritual pain relief for Leah, and guidance for Richard. They're Mormons, says Leah. I didn't know you got them in Yorkshire. Does Richard have other wives, I wonder? Probably not. And he and Leah finish each other's sentences and echo each other in that way some couples do. You wouldn't do that with someone you shared, would you?

In another room young Mel and James, who I like more, are going through the same kind of thing. Different problems though. For James, the main problem is that Mel's mum is there, and she keeps reminding James how little faith she's got in him. "It's up to James now to prove me wrong," she says. "James, just make sure you do a lot better job than your dad did." Poor lad, it's enough to make any boy run a mile.

And if that wasn't enough, they have the world's most irritating midwife who speaks without pauses or breaths: "Chin on chest chin on chest and push down into your bottom keep on going keep on going a bit more a bit more if you can keep it going keep it going …"

"Fuck," says Mel, and I know what she means.

"You just want to take this pain away," says the world's most irritating midwife. "If we could take this pain away we'd do it for you we'd all take a little piece wouldn't we?" Personally I'd take her away if I could, all of her. SHUT UP.

Both babies (Richie, 8lbs 5oz, and Harvey, 9lbs 12oz!) come out eventually, and are beautiful. Mel, who was fostered, is lovely about it. "It means everything to me having a baby, I can give it everything that I didn't have as a child," she says. "It doesn't make any difference what you've been through, who you are, you can still bring a kid up the best you can, and you can have a great life."

It's much the same every week – bump, nerves, pain, screams, big push, joy, tears, name, weight, big stuff ahead. It's never boring though – well, it's not a bad story, is it? The main characters are going through the most extraordinary thing that will ever happen to them, and at the end a beginning, if you see what I mean. More moving than BBC period drama Call The Midwife too, because this is for real.

And so much easier watching other people than doing it yourself. I – I mean we – just did it. Nightmare. I was sick with worry about the person I care most about, then sick with worry about the two people I care most about. And I can't see the worry ever ending. Yeah, OK, there are some quite nice things about it too.

Sri Lanka's Killing Fields: War Crimes Unpunished (Channel 4) followed up last year's damning investigation into the brutal endgame to civil war there. Focusing on four events, this harrowing film, again presented by Jon Snow, uncovered new evidence about the extent of the atrocities – execution of prisoners including children, deliberate shelling of civilians and depriving them of food and medical treatment, like some kind of medieval siege. And who was responsible? Not a fanatical terrorist group, but government forces.

This was a proper piece of journalism that asked serious questions of President Mahinda Rajapaksa and his brother the defence secretary – questions that should be asked in a war crimes trial.

A depressing, numbing film that rang on long after the final credits rolled.