Just six in 10 children have received both MMR vaccines in parts of London, according to official figures that lay bare the huge geographical divide in uptake.
NHS data analysed by MailOnline show rates among five-year-olds are as high as 96.4 per cent in County Durham, which leads the way in England. But they dip to just 59.8 per cent in Camden.
Statistics show the proportion of children getting their first MMR jab by the time they turn two has