Every year the Family and Childcare Trust conducts a survey to gather information about the cost of holiday childcare and its availability across Britain. The data -- collected from local authorities -- makes it possible to monitor changes in the costs and availability of childcare during school holiday periods and identifies differences in provision across the regions and nations of Britain. This year we have also undertaken an additional survey of parents, to help us understand their experiences of holiday childcare. The results of both surveys are included in this report which complements our annual survey of childcare costs that we release every spring. This years' Holiday Childcare Survey, the 13th in the series, is released at a time of heightened debate around the cost of childcare among politicians, as well as the configuration of the school year. While some parents are lucky and have access to high quality affordable holiday childcare, our results show that many families face a holiday childcare lottery of high costs and patchy provision. Despite the legal obligations to provide enough childcare for working parents, only 27 per cent of English local authorities and 6 per cent in Wales have enough provision for this group of families and these gaps have increased rather than decreased since the implementation of the Childcare Act 2006. All this takes a toll on families, with nearly one in five (17 per cent) of parents in our survey taking sick leave over the holiday period in order to provide childcare. (author abstract)