Sex and love. Some seek it, some need it, some spurn it and some pay for it, but we're all involved in it. Set on one afternoon on Hampstead Heath in north-west London, the film investigates the minutiae of seven couples. What makes us tick?
| Actor | Role |
|---|---|
 Holly AirdMolly | Molly |
 Eileen AtkinsIris | Iris |
 Hugh BonnevilleGerry | Gerry |
 Tom HardyNoel | Noel |
 Douglas HodgeBrian | Brian |
 Adrian LesterPete | Pete |
 Andrew LincolnJamie | Jamie |
 Ewan McGregorBilly | Billy |
 Gina McKeeJulia | Julia |
| EElle MckenzieEve | Eve |
 Sophie OkonedoAnna | Anna |
 Eglantine Rembauville-NicolleSophie | Sophie |
 Nicholas SidiLudo | Ludo |
 Mark StrongLouis | Louis |
 Catherine TateSara | Sara |
 Polly WalkerEsther | Esther |
 Benjamin WhitrowEddie Wright | Eddie Wright |
 Aschlin Ditta1st Man in Bushes | 1st Man in Bushes |
| MMelissa ThompsonPretty Girl | Pretty Girl |
| BBrian Callaghan2nd Man in Bushes | 2nd Man in Bushes |
| SSpencer StaffordMan in Men's Pond | Man in Men's Pond |
| OOnionBull Terrier | Bull Terrier |