[2] After meeting a woman called Rosina, they married and in 1957 emigrated to Perth in Western Australia as "Ten Pound Poms", where he continued his work as a motor trimmer before moving to the sales department.

[2] He was a prominent member of the Save Albert Park movement, after it was first proposed the Australian Grand Prix would relocate to the area where Cassell would walk his dogs.

Cassell also played Boss Finley in Sweet Bird of Youth with Lauren Bacall for the Sydney Theatre Company, accepting the role after the actor originally cast in it, Frank Wilson, suffered a heart attack.

[2] His film credits included: Money Movers, Cathy's Child, Squizzy Taylor, Breaker Morant, Puberty Blues, The Club, The Honourable Wally Norman and Strange Bedfellows.

[1][3] After appearing in the short-lived soap opera Taurus Rising as Ben Drysdale and Network Ten's crime drama Special Squad in 1984, Cassell swore off joining any further long-running series following a run of bad luck with several projects.

[5] Other television roles included: The Drifter, Falcon Island, The Flying Doctors, The Power, The Passion, Blue Heelers, SeaChange, Stingers and MDA.