Clare Bonavita calls her protégé Henry Charlton "Midsomer's answer to Steve Redgrave". Redgrave plays the talent scout from the Olympic Committee who is at the regatta to have a look at Charlton.
Mr. Jocelyn the solicitor is only mentioned by name in this episode. He is normally played by the late Timothy Bateson, who appeared in episodes Written in Blood (1998), Death's Shadow (1999), and Orchis Fatalis (2005). He died on 15 September 2009 (age 83).
Christopher Mellows plays Mr Stevens in this episode. He returns in episode 15.2, Murder of Innocence (2012), in the role of Giles Harrison.
Diana Quick plays Clare Bonavita in this episode. She returns in episode 18.1, Habeas Corpus (2016), in the role of Hermione Lancaster.