Tip worker Bob Harnett Williams has a nasty habit of taking his work home with him. Queens of Clean Kim Woodburn and Aggie Mackenzie are used to dirt and smells, but nothing could have prepared them for the pong caused by over four tonnes of rubbish that they find in Bob's house.

Tiggi and Lee Brooks share their house in Clacton-on-Sea with their two children and an array of animals including a lobster, a puffer fish and a tarantula. The walls are covered in soot and dust and the entire house is carpeted with dirty laundry. Kim and Aggie have their work cut out as they attempt to bring these Essex filth offenders and their various exotic pets to task.

Kim Woodburn and Aggie MacKenzie visit a full-to-bursting three-bedroom house in Epsom, Surrey, where three generations of the Gray family live in untidy conditions surrounded by a menagerie of animals. To make their task more difficult, mum Penny and dad Carl are environmentalists, so the cleaning duo must dispense with commercial cleaning products and make do with home-grown remedies and natural cures.

The experts turn their attention to two long-distance lorry drivers who spend months away from their west London home and have not lifted a finger to clean it for 13 years. The situation is exacerbated by their three dogs, but the pair refuse to believe their dirty dwelling might be damaging their health.

Retired social worker Dick Blackburn spent his entire life helping others; now he accepts that he might need a bit of help himself. Living by the Suffolk coast, Dick has drifted into a mucky mess over the past 20 years.

Valerie Pointer is a laid-back hippy chick who loves to spend her time at festivals and demonstrations. But her daughter Lucy is sick of her chilled-out ways. The family home is dusty beyond belief, cluttered with memorabilia from music festivals and has dirty underwear in the kitchen. Kim and Aggie join forces with Lucy in the hope that they can make Mum see the error of her ways.

Phyllis Gorlick-King is an art dealer. Her Kensington home is filled with pieces she has collected, but the antiques are piled high with dust and the floors are grimy and greasy. Kim and Aggie try to convince this grand dame that it's fitting for a lady to do her own cleaning.

Susan Clark Wilson and her son Peter share their London home with a wide range of creepy crawlies. The state of the house is affecting Susan's social life. She was once renowned for her dazzling dinner parties but is now too ashamed to invite people over. And Peter's disgusting bedroom is in such a state that his mother refuses to go in.

Kim and Aggie come to the aid of a Midlands family of four who haven't even unpacked their bags since moving in. This is by far one of the messiest homes featured since the start of the series.