Nightmare Tenants, Slum Landlords

Cases include Wendy, who was left with rental arrears of almost £3,000 after renting a house out to a nightmare tenant. Steve from Birmingham Council's housing enforcement team investigates poor living conditions above a local shop. And in south London, lawyer Chris has to deal with his client's site which has been filled by nearly two dozen caravans and a mountain of rubbish.

Alex is hit with a £7,000 bill after his tenant is found to have been running a business from his property. Developer Jon calls in an eviction specialist to rid a disused tram station of squatters, and Vicki is surprised to find out that a tenant has stopped paying rent and moved in a sub-tenant.

Watford builder David Simpson has a fight on his hands when his long-term tenant moves her boyfriend in and suddenly decides to stop paying - and when he tries to evict her, she makes life difficult. In Woolwich, lawyer Chris Sharpe helps a client whose property has been taken over by squatters, who have changed the locks and claim they are legitimately renting the house.

The owner of a tanning salon regrets letting an employee move into a house he owns when he is faced with complaints from the neighbours about wild parties and £3,000 in unpaid rent. A couple managing a property for their daughter arrange to sell it, only to find the tenant refuses to leave, while a housing enforcement officer goes in search of a landlord who has left a tenant without light, heat or running water.

Teorin and Collette had high hopes when they let out their five-bedroom family home, but it wasn't long before their tenant stopped paying rent - and then turned the house into a hostel for holiday-makers. Quickly running out of options, the couple turn to eviction specialist Chris Sharpe for help. Plus, Harrow council officers discover 40 people crammed into a potential deathtrap of a house, and a woman who relies on her rent for medical expenses tries to claw back some from her tenant.

An east London landlord who trusted his property to a letting agency discovers the house is being advertised on a Romanian website - and strangers have moved in. A South Yorkshire single mum is owed £10,000 in back rent when her tenant disappears, and has to prove he has abandoned the property to get it back. Plus, west London housing officers investigate a tip-off about people living in dangerous conditions behind a row of shops.

Susan and Gary bought an East End flat to let out and were approached by a letting agent who promised hassle-free guaranteed rent. But before they knew it, he had broken in and changed the locks. Now they are fighting to get the property back. Meanwhile, landlord Paul discovers that his seriously ill father's long-standing tenant owes a staggering £20,000 in rent for living in her Notting Hill home.

Catching up with the victims and villains of the housing rental market. Rachel intended to rent out her Snowdonia cottage for only three months. Four years later her tenant is still there and not paying any rent. Plus, the stories of Stevenage landlord Derek, whose tenant Kellie proved so troublesome that the police had to be called, and Claud from south London, who was left £30,000 in debt when a professional couple split up.

Kent couple Rachel and Chris are pushed to the limit when their relationship with their tenant breaks down and she stops paying rent, leaving them more than £5,000 out of pocket. Now they need to get her out or they could lose the house. Elsewhere, a tenant uses scare tactics to keep his landlord off his back, and in Harrow, council housing officers investigate a residential property that has been turned into a brothel.

The tale of an elderly couple whose hopes of a peaceful retirement were ruined when their tenants stopped paying rent, then moved in their abusive friends who became squatters. With the house becoming a free-for-all and in a terrible state of repair, and the couple facing a barrage of verbal threats and abusive behaviour, they have been forced to seek help in an attempt to get their property back. Plus, a man who cannot sell his house because his sitting tenant refuses to leave.

In Bristol, eviction lawyer Chris deals with a complex case in which squatters have broken into an empty pub and are now refusing to leave, with landlord Alex wanting them out as he is awaiting planning permission to turn the pub into flats. Jill is trying to regain a property she and her late husband bought as an investment, which she has been renting out to alleviate financial stress.

Harrow Council carries out early morning raids on several dangerous properties, only to find vulnerable tenants in uninhabitable conditions, including one man living in a plywood shed on a roof. Plus, two more cases of nightmare tenants. Nisha lost her job just as her tenants stopped paying the rent, while Andy agreed to rent his north London home to a friend - who ended up subletting the house and pocketing the profits for himself.

A young mum locked out of her home by the young couple she allowed to stay there for free while the wife had a baby. Plus, an east London landlord who found half a dozen strangers living in his house, after his original tenant had run off and sublet the property. Meanwhile, Harrow Council raid a small two-bedroom flat in unsafe conditions.

Catching up with the victims and villains of the housing rental market. Craig has been battling family friends to get his property back after three months of no rent. Owed thousands by Sophia, Terry was relived to get his house back, but then she called the police.

In Bristol, Jon's dream of turning a former tram station into flats was derailed by squatters, has he managed to get things back on track? Two tenants living in dangerous conditions were saving for a deposit, have they hit their target?

Following up on an Essex landlady who had to go to extraordinary lengths to evict her tenants, a landlord whose tenant refused to get the message, and another landlord who cannot move on with his life until he gets his tenants evicted.