PICK OF THE DAY

CALL THE MIDWIFE

8PM, BBC1 ★★★★

Sister Frances (Ella Bruccoleri, right) joined the order when she was 17 years old and has always been the baby of the group, but in tonight’s episode, she makes some very wise moves as she deals with a mum in a tricky situation. Trixie, meanwhile, has a terrible shock in the theatre at the Lady Emily clinic, an event that lays bare stark health inequalities – and a troubling moral and legal issue that must be brought to Sister Julienne without delay. It seems the future of Nonnatus House will not be secured by a publicprivate partnership after all.

COUNTRYFILE 6PM, BBC1 ★★★★

As the natural world continues its march towards summer, Helen Skelton is in Nidderdale in north Yorkshire, helping to keep track of adders as they come out of hibernation. On his Cotswold farm, Adam Henson has unpredictable weather to contend with, while Tom Heap investigates the pitfalls of increased pet ownership.

CLIMATE CHANGE: ADE ON THE FRONTLINE

8PM, BBC2 ★★★

Ade Adepitan starts the final leg of his ecological odyssey in Svalbard, in the Arctic Ocean, where winter temperatures have risen by an astonishing 6°C in 50 years. He learns about climate-friendly urban living in Copenhagen, while in Stockholm, he hears of Greta Thunberg’s hope for the future.

GUY MARTIN’S BATTLE OF BRITAIN 9PM, CH4 ★★★★

If anyone is game for embracing extreme g-force and flying upside down, it’s Guy. At aerial combat school, his training cranks up a gear, and he also enlists the help of the Parachute Regiment to learn about aircraft fire power. Finally, in the skies above Kent, can Guy shoot down a Messerschmitt 109? SA