In the last few years, 'adoption activity days' have gathered momentum in the UK, where children waiting to be adopted meet prospective adoptive parents at a party. The children are often 'hard to place,' either because of medical issues, their age, or behavioural problems. The hope is that once the families meet them face to face, they will get a much better idea of the children, rather than from paper and photo alone. For these children, the party day is often their last chance to find a family, before they are put into long-term foster care. Alan Dein joins couples Rob and Sarah, and Emma and John, and single adopter Rachael, as they look for a child. Producer in Bristol: Sara Conkey.