A packaging apparatus (1) comprising: a wrapping material applicator (3) for helically wrapping articles (A); an inlet conveyor (2) for transporting unwrapped articles to the applicator; an outlet conveyor (4) for transporting wrapped articles away from the applicator; wherein the outlet conveyor comprises a first conveyor (11) and a second conveyor (12) adjacent to and downstream of the first conveyor (11), wherein the packaging apparatus (1) further comprises a controller (80) arranged to selectively vary the linear velocity of the second conveyor relative (12) to the linear velocity of the first conveyor (11) so as to separate, or increase the separation of, collations of one or more articles (A) on the outlet conveyor.