Calendar Girls
(2003, Julie Walters, Helen Mirren)
John Hewitt notes “ 'Calendar Girls' has Pennine Motor Services Leyland National LN19 (BYW432V, new as London Transport LS432) operating on a school bus service. Both exterior and interior shots.”
Later US footage includes this sleek MCI 102 fitted out as a tour bus for the 3rd Storee band: