On a general item, whilst in the centre of Bristol today I saw a First Group service bus bearing a large advertisement for Jet2 to Amsterdam. It did not give a UK airport and merely stated something like, "From £9" plus tax/charges, but the last bit spelt out in small lettering.
MV, they have them up here on the Stagecoach Cumbria buses, although they were originally from Manchester, but brought up here when Carlisle was flooded and a whole fleet of buses written off. I wouldn't take it to mean anything, probably just a bus replacing another bus.
MAN would be closer to BRS than LBA