Silent Witness is on BBC One at 9pm.

In the first part of this week’s case, Nikki is left humiliated when a barrister accuses her of making a serious error.

Cold Feet is on ITV at 9pm.

The friends rally round to help Jenny, while David’s situation goes from bad to worse.

Teachers Training to Kill is on Channel Four at 9pm.

The documentary follows a group of US teachers as they attend a controversial summer school, where they are trained to use guns.

Building the Channel Tunnel, 25 Years On is on Channel Five at 8pm.

This two-part documentary hears from people who helped build the world’s longest undersea tunnel.

Food Unwrapped, Takeaway Special is on Channel Four at 8pm.

Kate Quilton goes behind the scenes at delivery company Deliveroo.

Don McCullin, Looking for England is on BBC Four at 9pm.

One-off documentary in which the photographer explores the country, visiting the East End of London, Bradford, Eastbourne and Scarborough along the way.