Ambulance is on BBC One at 9pm.

A specialist crew fights to save the life of a hit-and-run victim, and paramedics are called to a multi-storey car park where someone is threatening to jump off the roof.

The Supervet at Christmas is on Channel Four at 8pm.

In this special edition of the series, Noel Fitzpatrick and his team treat a puppy in need of complex surgery.

New Girl is on E4 at 9.30pm.

In the final-ever episode of the US comedy, Jess and the gang prepare to say their goodbyes to the loft.

The First is on Channel Four at 9pm.

Laz tries to sway an influential journalist, who has been critical of the Mars project.

Fortitude is on Sky Atlantic at 9pm.

Return of the crime thriller. Two police officers arrive from Oslo to investigate the anarchy in Fortitude, while sheriff Dan Anderssen’s descent into madness continues.

Naked Attraction is on Channel Four at 10pm.

Anna Richardson hosts as a 22-year-old gym enthusiast, and a 25-year-old wedding model, each choose a date from six naked people.