The Knock Complete Series 1,2,3,4,5 DVD - (1994-2000) - Caroline Lee-Johnson, Steve Toussaint, Enzo Squillino, Jr., Malcolm Storry, Marston Bloom, Andrew Dunn, Mark Lewis Jones, Peter O'Brien

The Knock DVD tv series is a British television crime drama, created by Anita Bronson, which portrayed the activities of customs officers from the London City & South Collection Investigation Unit of HM Customs and Excise. The series derived its name from the distinctive "Knock knock knock" command used over the radio to synchronise a raid. Five series were broadcast from 10 April 1994, until 11 November 2000. The series had a rotating cast, with only a small number of cast members appearing throughout the series' run. The only three cast members to appear in every series were Caroline Lee-Johnson, Trevor Byfield and Steve Toussaint. The series also adopted a number of different formats: while the early series interspersed various storylines and had running plots across the series; later series adopted a multi-part format resulting in two or three cases per series; while the final series adopted a stand-alone week by-week format.

Starring - Caroline Lee-Johnson, Steve Toussaint, Enzo Squillino, Jr., Malcolm Storry, Marston Bloom, Andrew Dunn, Mark Lewis Jones, Peter O'Brien, Alex Kingston