Guest Stars Pearl Mackie as Alysse Tim Delap as Byron Kenichiro Thomson as Martin Jess Chanliau as Ronnie Buckhurst Bhav Joshi as Anu Kapoor David Bark-Jones as Alistair Kemper-Waithe Rupert Vansittart as Julian Hoope T'Nia Miller as Cecilia Dennison Colin Mace as Shenk