From the new bachelor Prime Minister (Hugh Grant
) instantly falling in love with a refreshingly real member of the staff (Martine McCutcheon
) moments after entering 10 Downing Street, to a writer (Colin Firth
) escaping to the south of France to nurse his re-broken heart who finds love in a lake, from a comfortably married woman (Emma Thompson
) suspecting that her husband (Alan Rickman
) is slipping away, to a new bride (Keira Knightley
) mistaking the distance of her husband's best friend for something it's not, to a widowed stepfather (Liam Neeson
) trying to connect with a son he suddenly barely knows, from a lovelorn junior manager (Laura Linney
) seizing a chance with her long-tended, unspoken office crush, to an ageing "seen it all, remember very little of it" rock star (Bill Nighy
) staging an end-of-career comeback in his own uncompromising way...
Love, the equal-opportunity mischief-maker, is causing chaos for all.
These London lives and loves collide, mingle and climax on Christmas Eve with romantic, hilarious and bittersweet consequences.