Granary Care knows children. Granary Nanny Agency is based in Middlesex and we service a range of clients in north, west and Greater London. Our nanny agency is part of Granary Care Limited, an established childcare company since 2003. The company has owned and operated three nurseries and currently runs a number of out of school and holiday clubs throughout Harrow, Hillingdon and London. We pride ourselves in the quality of nannies and au pairs that we offer families.