Tonight, the controversial The Undateables returns. This time around it follows the journeys of several more extraordinary singletons with challenging conditions as they enter the dating circuit in pursuit of a soul-mate.

This time we meet a doctor of psychology with dwarfism, a young man with Tourette's and a mum with such severe OCD she can't even hug her mum. Joining us are two of the Undateables from this series - Kate, an office worker with Downs Syndrome and Sam, who has a form a dwarfism. Both are looking for love but have found their condition has affected their quest for Mr Right.