Dig out your Nike hoodie and prepare for some ‘sick’ grime tunes – Brentford’s most notorious pirate radio station is back on the air!

Yet while this BAFTA-winning mockumentary has become the hottest property in British comedy, its subject, Kurupt FM, still hasn’t hit the big time.

As the fourth series opens, MC Grindah is increasingly paranoid about a rival station – and DJ Beats is adjusting to fatherhood…