General population growth will normally see average age increase by 2037 . Within 45 years , population in Inverclyde will age by 5.3 years to 51.2 . But in London the average age in Barking will have dropped from 33 to 33.4 . The seaside town of Bournemouth population will decrease from 41.3 to 41 . Town with the oldest population in the UK is Christchurch in 1851 .
General population trend will normally see average age increase by 2037 . Within 45 years , population in Inverclyde will age by 5.3 years to 51.2 . But in London the average age in Barking will have dropped from 34 to 33.4 . The seaside town of Bournemouth population will decrease from 41.3 to 41 . Town with the oldest population in the UK is Christchurch in Dorset .