In the UK, most children start nursery at two or three years old and move on to primary school the academic year they turn five. Some nurseries can take care of babies as young as 3-6 months old. These nurseries are often called day nurseries or daycares. Some nurseries are called children’s centres. Some nurseries have separate rooms for different age groups. Preschools in the UK are mainly designed for children from toddler age to five years.