Housing investigators are following up tip-offs and pounding the streets of one of London's most fashionable and expensive residential areas, Primrose Hill. And Michelle reveals how the vigilance of one housing officer put investigators on the trail of a tenant who has been living in France whilst unlawfully subletting her council flat. The flat has now been recovered and allocated to a single mother who's been on the waiting list for more than seven years. In another case, cameras are with an eviction team, including bailiff and locksmith, as they move in to repossess a flat that has been unlawfully sublet. Investigators discover the official tenant is a convicted criminal and is serving a jail sentence.