Britain’s Giant Pet Food Factory
9pm, Channel 4
Work, rest and spay: it turns out that the Mars corporation actually produces more pet food than chocolate bars. This doc goes behind the scenes at its manufacturing and research facility near Melton Mowbray, where more than 250 humans and 1,000 animals collaborate. Cheerily narrated by Robert Webb, it provides a fascinating glimpse inside an overlooked industry, but the scenes of employees taste-testing the latest products should probably carry a content warning. Graeme Virtue
Serengeti
8pm, BBC One
As the dry season arrives, lions laze by the water hole only for their peace to be disturbed by a lightning strike that ignites a bushfire. Panic spreads as things go a bit Watership Down. Mute John Boyega’s anthropomorphic commentary and enjoy footage of a mighty exodus. Mike Bradley
Eat, Shop, Save
8.30pm, ITV
Ranvir Singh hosts a new series helping more families overhaul their lifestyles, budget-wise and health-wise, in just eight weeks, with the assistance of chefs, nutritionists and shoppers. This week’s household in dire need of intervention are the Laherty family from Bury who are champion chocoholics. Ali Catterall
Broke
9pm, BBC Two
This week’s instalment follows more people in work, but struggling to make ends meet, including teen Tyrone who works a zero-hours contract and wants to rent a flat, but can’t guarantee he will earn enough. Scandalously, almost a million workers are on zero-hours contracts and in a similar position. A clarion call for action. Mike Bradley
Portillo: The Trouble With the Tories
9pm, Channel 5
The “big beasts” turn out for Michael Portillo’s political autopsy: Johnson, Gove, Blair and others explain how an obsession with Europe, born of a Thatcherite desire for revenge, has destroyed the Tories. Might it also destroy the UK? A different programme will have to care about that. Jack Seale
I Am the Night
9pm, Alibi
India Eisley takes centre stage in a beguiling six-part murder mystery that doubles as a commentary on race relations in the US in the 1940s. Lost mixed-race teen Fauna (Eisley) and disgraced journalist Jay Singletary (Chris Pine) find themselves dragged into a web of secrets. Mike Bradley
Film choice
In Time, 10pm, Syfy
Time is pretty literally money in this intriguing sci-fi tale from Gattaca director Andrew Niccol. It is set in a future-world where people’s lives are terminated at the age of 25, unless they accrue extra years – by wheeling, dealing and robbing. The clever setup gives way to efficient genre action, with Cillian Murphy a vicious villain. Paul Howlett
Sport
Test Cricket: England v Australia 10am, Sky Sports Main Event. Edgbaston hosts day one of the first Ashes Test.
Women’s European Tour Golf: The British Open 11am, Sky Sports Golf. Milton Keynes’s Woburn Golf Club hosts day one of the final major of the year.
Horse Racing: Glorious Goodwood 1.30pm, ITV. Includes the Nassau Stakes.
