Guest Stars Chukwudi Iwuji as Alex 'Zander' Hale Elizabeth Roberts as Liv Stern Mollie Cowen as Matilda 'Tilly' Stern Toby Oliver as Vinnie Stern Ellora Torchia as Maggie Lavelle Kobna Holdbrook-Smith as Vicar Glen Peters Afolabi Alli as Sean Bainbridge Brenock O'Connor as Sasha Maggie O'Neill as Yvonne Duchy Anna-Maria Everett as Donna Zee Asha as Sal Ward Tanya Franks as Sarah Pope Rebecca Deren as Andie Peters Jack Riley as Eddie Pope Uncredited Amy Ip as Trixie Viktorija Faith as Paralegal Johanna Thea as Commuter David Olawale Ayinde as Lawyer Will Gompertz as Himself