3 Steps to Heaven (1995)

One morning, three Londoners leave Sean after having painted the town red. When his body is found floating on the Thames, his girlfriend Juliette blows smoke. Determined to avenge Sean, the young woman decides to pay a visit to her lover's three friends before deciding what to do. What she discovers actually is not what she expected but very upsetting details about Sean in particular and more generally speaking, about the underworld of London.