Fat Friends (ITV drama serial, 2000-5)

Episode 1.1 Two FirstGroup singledeckers, one is First Leeds 4070 (N470JUG), a Dennis Lance/Plaxton Verde, the Wright-bodied vehicle unidentified:
Episode 1.2 One of the central characters, a bus driver, has a heart attack at the wheel of First Leeds 5162 (F152XYG), a Leyland Olympian/Northern Counties (thanks Ewood Eddie). Later in life this bus was re-engined with a Scania unit and carried a badge advertising the fact:
An Optare Vecta of Black Prince of Morley passes in the background of one scene:
Episode 2.4 The bus driver is seen "wearing what appeared to be First Group uniform but is shown reporting for work at Black Prince's Morley depot with a number of Alexander bodied Scania doubledeckers in the background!" (thanks Chris Hough):