Guest Stars Chukwudi Iwuji as Alex 'Zander' Hale Elizabeth Roberts as Liv Stern Toby Oliver as Vinnie Stern Mollie Cowen as Matilda 'Tilly' Stern Ellora Torchia as Maggie Lavelle Kobna Holdbrook-Smith as Vicar Glen Peters Afolabi Alli as Sean Bainbridge Darren Morfitt as Max Lacey Jane Dowden as Joanna Taylor Mark Devereux as Senior Lawyer Fordy Fleet as Baby Isla Lucas as Baby Colin Manford as Stand Up Comic Uncredited Elly Bran as Receptionist