North Sea Hijack (released as ffolkes outside the UK and as Assault Force on US TV) is a 1980 British adventure film starring Roger Moore, James Mason, Anthony Perkins and Michael Parks. It was directed by Andrew V. McLaglen and adapted by Jack Davies from his novel, Esther, Ruth and Jennifer.

This film was a vehicle for both Moore and Perkins to try to escape typecasting. Previously, Moore had been practically typecast as a womanising, happy-go-lucky playboy in such series as The Saint, The Persuaders! and as James Bond. In contrast to those parts, he portrays a bearded, eccentric, arrogant, cat-loving chauvinist with master strategist skills who does needlepoint embroidery and drinks scotch whisky immoderately.