The topical Yorkshire school drama enters a fifth season. Plus: the strange story of crop-duster pilot Gary Betzner – identity swaps, drugs and scandal. Here’s what to watch this evening

Ackley Bridge

10pm, Channel 4

“The loony lefty stuff won’t wash up here; you’re not in London now.” That’s the kind of comment new teacher Asma faces from her colleagues in the fifth season of this topical high school drama set in Yorkshire. Top Boy’s Ashley Walters directs the first two episodes (the full season airs this week, with a double bill every night), as the teachers, pupils and parents of Ackley Bridge navigate issues such as online trolling, debt and sexism – all the light stuff. Hollie Richardson

Filthy Business

8pm, BBC Three

After being furloughed in lockdown, West Midlands friends Cam and Oli set up a successful waste-management business. It’s an odd choice of documentary subject – why not focus on the refuse collectors who didn’t financially benefit while working through the pandemic? – but we see their business bromance story. HR

Aids: The Unheard Tapes

9pm, BBC Two

In the last episode of this compelling series, experts recall a sense of hopelessness while trying to find an effective drug as the number of deaths rapidly rose. At the heart of it are the voices of John, Jeremy and Tony that we have heard via tape throughout. They candidly, and often humorously, talk about the prospect of both dying –and continuing to live. HR