A distant view of Maidstone and District double deckers, and a lot of trolleybus wires:
....but there's some great footage of Maidstone and District SO48 (LKT996), a 1950 Bristol L6A with Eastern Coachworks body. As the heroine boards, it's passed by a Hastings trolleybus: Interior footage is clear, too: (originally flagged up by Colin Read, also thanks to Hugh Moules)