A BBC documentary, on Wednesday night, shared the sweet moment when a surrogate revealed she was pregnant with her friends babies.

Married couple Paul and Craig Saunders, from West Sussex, who later found out that they were having twin girls via their work friend, Mel, were also shown getting ready for the arrival of their babies on last nights BBC 2 show The Baby has Landed.

The moment, where their surrogate friend reveals she's pregnant, was shown in the documentary, when they rewind nine months and Mel announced she was pregnant by video calling the couple and revealing a positive pregnancy stick, which she hadn't even seen herself yet.

Paul and Craig were beside themselves with happiness, while Mel, the expectant mother, couldn't believe it either.

The new four-part documentary, which started last night, lifts the lid on one of the most intense and extraordinary times in any family’s life – the arrival of a new baby.

A BBC documentary shared the sweet moment when a surrogate reveals she's pregnant with her friends babies

Married couple Paul and Craig Saunders, from West Sussex, talked about the arrival of their twins on the show last night

Mel (right with husband Tim) announced last night that she's pregnant by video calling the couple and revealing a positive pregnancy stick, which she hadn't even seen yet.

After we're introduced Craig and Paul, as well as their surrogate family Mel and Tom, the documentary rewinds to nine months ago.

It showed Mel talking to the couple via FaceTime, where she says: 'Yes I've weed on the stick, and I put it straight in this envelope.'

While Craig, smiling says: 'Oh my god so you haven't even looked at it?'

With Mel responding: 'No, and its killing me, its been sat in the bathroom and oh my god.'

Tearing open the envelope she brings out the pregnant stick and shows it to couple first, and when they see the two marks, which indicates that she is pregnant, with their baby they both shout out 'Oh my god' and start to laugh.

While she then turns it around to find out that she's pregnant, and she yelps with excitement.

Mel before she delivered the news to Paul and Craig on last nights show via a video call

Paul watching on as Craig holds their twins - on last nights show they were seen finding out that their surrogate is pregnant

Mel shows the positive pregnancy test to the men and they are beside themselves with shock

Last night on the show Mel tore open the envelope and brings out the pregnant stick and shows it to couple first, and when they see the two marks, which indicates that she is pregnant, with their baby they both shout out 'Oh my god' and start to laugh

The beginning of the show saw Craig and Paul getting the nursery ready for the arrival of the twins - putting together a crib and hanging out fixtures on the walls.

While the couple admitted that they have been planning to have a baby, via surrogate for three years Craig spoke about having a family when he was younger.

'I grew up knowing I liked boys, but then dealt with the fact that if I liked boys then I'll never have a family. So I thought maybe I should force myself to like girls to have a family,' he said.

'And then I got used to the idea that it was never going to happen.'

The men get their house ready for the arrival of the twins and get to work with decorating the nursery and putting up the cot (Craig pictured)

Paul cooing one of the twins on his lap on sofa - they used their friend Mel as a surrogate to have their twins

The men have taken pride in decorating the nursery,a s shown on the show last night, and have added little touches like this sign

Mel shares how she may feel when she gives birth to the twins and will give them to her friends - she already has two children herself

Fans of the show on Twitter said how much they loved the show: 'Lovely piece of programming - just fabulous to share these journey.'

While another said: 'I tuned in to #thebabyhaslanded just to coo over cutie babies, but if I’m being completely honest, it wasn’t terribly interesting television.'

However, one said about Tom's reaction to Mel being a surrogate: 'Hmm I’m not too sure if this’ll work out - her husband doesn’t seem happy nor tbh does she #surrogacy #thebabyhaslanded'.

Some fans loved the show and said how 'fabulous it was to watch their journeys', while another said they weren't too sure about

Later on in the show Craig went on to say that once they knew they would be having children that 'priorities changed' and 'things that previously seemed important like travelling the world no longer so important. What seems important to me now is having a mini version of me and teaching someone to read to.'

The documentary also met surrogate Mel and husband Tom, when she's eight days away from giving birth to the twins. The already have two children themselves - Zachery and Keira.

Mel admits it was something she had to think through a lot: 'You can't just steam into being a surrogate, you have to have it all worked out in your head. I'm not sure how I'm going to handle it, I might get really upset, the whole family might.'

While Mel went on to say that they had been completely honest with their children - when it came to her being a surrogate for the couple.

The episode followed four other couples - including first-time parents Syler and Mo Nicholson-Bayoumi, who live in Syler’s Mum Sara’s house, together with her Dad Tony and her Grandad Pat. The arrival of their new baby saw four generations living under one roof.