Guest Stars Barry Atsma voices Christie Carmichael Elizabeth Roberts as Liv Stern Toby Oliver as Vinnie Stern Mollie Cowen as Matilda 'Tilly' Stern Rose-Marie Vince as Cora Defoe Jesse Harold as Cora Defoe Alex Guersman as Gael Radhika Aggarwal as Prisha Lindsay Duncan as Caroline Damian Lynch as Mike Howard Corlett as Connor Kate Maravan as Trudy Viss Elliot Safavi as Gemma