David Tennant narrates the fourth episode of a new ten-part weekly series, Inside Birmingham Children's Hospital, from 9pm on Channel 4 tonight.

The heart-warming documentary is produced by Dragonfly, the team behind the award winning One Born Every Minute, and is set in one of the largest and most advanced paediatric units in the world. With an unprecedented scale of access, the show follows children and their families on their journeys through 34 specialist departments and further afield into their homes across Britain. The series also features and hears from more than 50 members of staff ranging from leading surgeons and Emergency consultants to specialised nurses, technicians and clinical child psychologists as they care not just for their patients, but the emotional wellbeing of the whole families they have in tow.

Set in the heart of Britain’s second city, the series combines single camera documentary filmmaking with a multi-camera rig set up throughout the hospital to give a 360 degree perspective on the whole hospital, its staff and of course, those that pass through its doors daily, all set against conversations round the dinner table at home and the fraught, funny and all too recognisable family car journeys to and from the hospital. Over the next ten weeks, we’ll follow a number of stories; from life-threatening illnesses and deeply personal psychological challenges to time-honoured childhood bumps and scrapes.

Inside Birmingham Children's Hospital
Episode 4
Thursday 30th June, 9pm
Channel 4

One minute they're bewilderingly grown up and the next they're a child again: teenagers present parents and doctors with a unique challenge. It is said that 'the day we fret about our future is the day we leave our childhood behind' and this episode follows two teenagers making their own life-changing decisions about medical treatment, while a third is rushed to hospital after some youthful risk-taking leaves her with a potentially serious injury. For 16-year-old Jack, life is about his mates and going to gigs. But he is also a severe epilepsy sufferer, and wants to have pioneering brain surgery to stop his frequent and debilitating fits. But there is a risk that the operation could permanently affect his memory and personality. It's his choice and, for his parents Allyson and John, it's the most frightening decision they will never make. Sixteen-year-old Rene has sickle cell anaemia: a debilitating condition that means she has to undergo full blood transfusions every fortnight. The hospital have offered her a stem cell transplant, which could potentially cure the condition, but it's not without risks and it means a summer in hospital without her friends. Her mum Ann has to wait and watch Rene take the decision for herself. And 13-year-old Evie is rushed to the Emergency Department after an accident on a school mountain bike trip, which re-awakened her mum Holly's mothering instincts, while tough-talking 15-year-old Rodi becomes his mum Elif's little boy again when he has to have his shoulder reset after a rugby injury.