In the first episode of the sixth series, fourth generation twins make an appearance on the delivery suite at Southmead Hospital in Bristol, a larger-than-life double act struggle to see the funny side of their extended labour, and an expectant father holds his breath hoping for a boy. Mel is an identical twin. Her father is also a twin, as was her grandmother, so it's incredibly rare that Mel herself would be pregnant with twins, but that's exactly what has happened. When Mel's waters break unexpectedly she has to choose whether her husband or her identical twin sister will be her birthing partner. Larger-than-life Su felt she'd hit the jackpot when she met younger man Dan, and they arrive at Southmead in high spirits. Their baby is in breech so they've been booked for a caesarean, but those plans are thrown out the window when baby decides to move, meaning that the couple are able to have a natural delivery. Finally, the race is on for Katy and Rob to make it to the delivery suite before their second child arrives, and Rob is praying this one's a boy.