London hairdresser Claire, who spends 22 hours a week keeping her one-bedroom flat immaculate, helps out 67-year-old ex-binman Charlie from Hemel Hempstead, who's down to his last clean teaspoon. Andy from Leicester, who likes to clean things in even numbers, meets keen historian and collector Ian, from Colchester, whose two-bedroom house is home to 300 troll dolls.

Gemma, from Hertfordshire, cleans for 12 hours a week to keep her two-bed house immaculate, going through two vacuum cleaners a year. Gemma meets Jim, a father of two from Kent, whose love of car boot fairs has left him with a hoard of over10 tonnes of things, including a lot of women's clothing - collected because of Jim's other hobby, cross dressing. The second volunteer is Angie, from Hampshire, who mops the floor of her three bedroom bungalow in Hampshire, on her knees, twice a day. Angie meets widower Brian at his house in Kent, which is also an owl sanctuary and home to 37 owls. Brian's traditional view of cleaning being 'woman's work' is set to be challenged by Angie, if she can overcome her bird phobia first.

Caren, from Warrington, cleans for at least four hours a day and her cat is only allowed outside on a lead. Caren meets Linda and her son Matt, who have being living amongst grime for nine years and have out-of-date food from the 1990s. The second volunteer is OCD-diagnosed Jamie, from Somerset, who can't stand any form of clutter, uses so much bleach it burns his eyes and must check the door 16 times before he leaves home. Jamie meets Mick, from North London, who lives in a one bed flat filled with clutter and grime. But getting Mick to let go of his precious belongings is not going to be straightforward.

Claire can't abide dirt and won't use her cooker to cook. She meets Sue and Roger, two pensioners from Hertfordshire who once lived the rock and roll lifestyle and are now swamped by clutter. Lynne from Luton takes an old-school approach to cleaning. She visits the home of self-confessed bachelor boys Mark and Karl, two football loving buddies who haven't cleaned their house in over 15 years.

The first cleaning volunteer is 23-year-old council worker Dann, from Nottingham. Dann replaces his loo seat once a month and regularly bathes his cats in flea treatment. Dann helps out Charlotte and Dom, from Portsmouth, who haven't cleaned their flat in a year. The second volunteer is Angela, from Nottingham, who gets through three bottles of bleach a week. Angela meets Lorraine, from Scarborough, who hasn't cleaned her kitchen for two years. And OCD-diagnosed Alison takes on Helen to see who has the most spotless kitchen cupboards.

Amanda from Essex not only works 60 hours a week, but the 31-year-old also spends 20 hours a week on housework. Amanda meets Janine, also from Essex, who is a bit of a hoarder. Full time industrial cleaner Mark, from Leicester, spends more than 80 hours a week cleaning at work and home and has an obsession for colour coordination. He meets 58-year-old unemployed bargain hunter Avril, in Chiswick.

Andy from Reigate, who weeds his patio daily, helps Hayley, who hasn't cleaned her microwave since the 90s. And garden designer Charlie helps Antoinette in Dorset with her clutter.

Glamour model Kerry from Essex helps fellow Essex mum Vikki, whose toilet hasn't been cleaned in four years. And Tina from Slough helps Mike from Ipswich with his junk-filled home.