S4 E1 • Episode 1

- Susie Freeman, 20 years, fitness instructor, Peterborough - Paul Hamblin, 31 years, fitness coordinator, Peterborough - Cameron Jensen, 26 years, personal trainer, Peterborough - Austen Moore, 26 years, regional coordinator, Peterborough - Justine Potter, 27 years, fitness instructor, Peterborough

Première diffusion : 22 septembre 2001

S4 E2 • Episode 2

- Sol Gilbert, 25 years, company director, Brighton - Jane Hamilton, 36 years, personal trainer, Worthing - Rozanna Roberts, 24 years, account representive, Hove - Eddy Spells, 27 years, carpenter, Hove - Neil Tawse, 27 years, fitness manager, Brighton

Première diffusion : 29 septembre 2001

S4 E3 • Episode 3

- Colm Curran, 26 years, senior fitness instructor, Belfast - Paul Curran, 24 years, senior fitness instructor, Belfast - Imelda McAteer, 28 years, PE teacher, Belfast - Ziad Mutasim, 26 years, fitness instructor, Belfast - Heather Thompson, 24 years, gym manager, Belfast

Première diffusion : 6 octobre 2001

S4 E4 • Episode 4

- David Buxton, 36 years, managing director, London - Zi Khan, 33 years, restaurateur, Doncaster - Sara Lee, 24 years, billings coordinator, London - Paul Wallace-Simms, 35 years, RE teacher, Bognor Regis - Jules Woolston, 34 years, conference organiser, Manchester

Première diffusion : 13 octobre 2001

S4 E5 • Episode 5

- Gillian Anderson, 22 years, post graduate, Glasgow - Peter Beggs, 33 years, technical marketing manager, Glasgow - Suzanne Gibson, 22 years, fitness instructor, Glasgow - Lee Graham, 26 years, gym instructor, Johnstone - Alexander Urquhart, 26 years, personal trainer, Glasgow

Première diffusion : 20 octobre 2001

S4 E6 • Episode 6

- Nick Clarke, 30 years, civil servant tax advisor, Cardiff - Stuart Ivins, 36 years, civlil servant tax advisor, Cardiff - Heather Jones, 37 years, civil servant tax advisor, Cardiff - Michelle Moses, 32 years, civil servant tax advisor, Cardiff - Michael Webber, 31 years, civil servant tax advisor, Cardiff

Première diffusion : 27 octobre 2001

S4 E7 • Episode 7

- Andy Callard, 26 years, training officer, Buckinghamshire - Clare Hallsworth, 27 years, fundraising events manager, London - Helen Loxton, 28 years, sports sponsorship manager, London - Russell Watson, 28 years, English teacher, London - Lauren Waughray, 32 years, IT consultant, London

Première diffusion : 3 novembre 2001

S4 E8 • Episode 8

- Mick Farrell, 24 years, fitness instructor, Oldham - Lorraine Hawksworth, 32 years, costomer care advisor, Rochdale - Michelle Snape, 29 years, office administrator, Oldham - Lady Eva Speakman, 32 years, company director, Littleborough - Lord Nick Speakman, 38 years, company chairman, Littleborough

Première diffusion : 10 novembre 2001

S4 E9 • Episode 9

- Scott Barter, 29 years, firefighter, Warwickshire - Danni Gregory, 31 years, firefighter, Warwickshire - Steve Langhor, 35 years, leading firefighter, Warwickshire - Hannah Lodder, 25 years, leading firefighter, Warwickshire - Nicky Rudge, 30 years, trainee firefighter, Warwickshire

Première diffusion : 17 novembre 2001

S4 E10 • Episode 10

- Stephen Champkins, 31 years, senior negotiator, Cambridgeshire - Jason Hearn, 31 years, estate agent, Buckinghamshire - Abigail Lordon, 29 years, payroll officer, Milton Keynes - Ben Taylor, 29 years, area manager, Bedfordshire - Abigail Trigg, 23 years, estate agent, Derbyshire

Première diffusion : 24 novembre 2001

S4 E11 • Episode 11

- Lesley Barnett, 31 years, fitness coordinator, London - Howard Braband, 34 years, health club director, Peterborough - Tim Foster, 31 years, general manager, Sheffield - Venita Joaquim, 29 years, PA secretary, Fleet - Lisette Mayhew, 33 years, PE teacher, Peterborough

Première diffusion : 1 décembre 2001

S4 E12 • Episode 12

- Steve Hyland, 40 years, MD building company, Surrey - Linda Kalantarian, 38 years, beauty therapist, Surrey - Andy King, 40 years, health business owner, Surrey - Joanne Llambias, 32 years, beauty therapist, Surrey - Anna Price, 29 years, personal trainer, Middlesex

Première diffusion : 8 décembre 2001

S4 E13 • Episode 13

- Catherine Baty, 34 years, police officer, Yorkshire - Andy Short, 27 years, police officer, Yorkshire - Neil Stanton, 40 years, police sergeant, Yorkshire - Angie Went, 24 years, police officer, Yorkshire - Mark Whitehouse, 32 years, police constable, County Durham

Première diffusion : 15 décembre 2001