Narnia's Lost Poet: The Secret Lives and Loves of CS Lewis
(BBC documentary, 2013)
A look at the life of C S Lewis by his biographer A N Wilson includes footage of Oxford and several Oxford-based buses are seen. A Stagecoach Van Hool T9 Astromega in Oxford Tube livery inbound from London passes an Oxford Bus Scania N230/ADL E400 on route X13. The MegaRear advert on the back of the VanHool isn't enough to definitely ID the bus - there were several with this:
A Stagecoach Oxford ADL E400H hybrid approaches Magdalen Bridge:
Some really nice footage of preserved City of Oxford 956 crossing Magdalen Bridge, then climbing Headington Hill with A N Wilson aboard and an Oxford Bus coach behind. It's a 1957 AEC Regent V/Park Royal. At one point it's passed by an Oxford Bus ADL E400 on blue Brookesbus livery: