S2 Ep1: Matt Preston

S2 Ep3: Michael Simkins

S2 Ep5: Dame Zandra Rhodes

S2 Ep7: Deborah Meaden

S3 Ep1: Steph McGovern

S3 Ep3: Georgia Toffolo

S3 Ep5: Jake Shears part 1

S3 Ep6: Katie Piper

S3 Ep7: Ruth Davidson part 2

S4 Ep1: Reverend Richard Coles part 1 

S4 Ep2: Nicola Benedetti

S4 Ep3: Lulu part 2

S4 Ep5: James McVey

S4 Ep7: Dan Snow

S5 Ep1: Alexandra Shulman

S5 Ep3: Nadine Coyle

S5 Ep5: Gail Porter

S5 Ep7: William Boyd

S6 Ep1: Jane Seymour

S6 Ep3: Dame Sheila Hancock

S6 Ep5: Edith Bowman

S6 Ep7: David Baddiel

S7 Ep1: Dame Jacqueline Wilson

S7 Ep3: Sunetra Sarker

S7 Ep5: Sharleen Spiteri

S7 Ep7: Emma Barnett

S8 Ep1: Mel Giedroyc

S8 Ep3: Dannii Minogue

S8 Ep5: Matt Goss

S2 Ep2: Donna Air

S2 Ep4: Daisy May Cooper

S2 Ep6: Anton Du Beke

S2 Ep8: Ashley Roberts

S3 Ep2: Christopher Biggins

S3 Ep4: Skin

S3 Ep5: Jake Shears part 2

S3 Ep7: Ruth Davidson part 1

S3 Ep8: Sarah Parish

S4 Ep1: Reverend Richard Coles part 2 

S4 Ep3: Lulu part 1

S4 Ep4: Francesca Hayward

S4 Ep6: Andrea McLean

S4 Ep8: Jess Gillam

S5 Ep2: Jeremy Vine

S5 Ep4: CeeLo Green

S5 Ep6: Dr Ranj

S5 Ep8: Trinny Woodall

S6 Ep2: Kate Thornton

S6 Ep4: Jay Blades

S6 Ep6: Baroness Sayeeda Warsi

S6 Ep8: Dame Esther Rantzen

S7 Ep2: Dr Alex George

S7 Ep4: YolanDa Brown

S7 Ep6: Tom Davies

S7 Ep8: Anya Hindmarch 

S8 Ep2: Shirley Ballas

S8 Ep4: Tova Leigh

S8 Ep6: Jenny Beavan