"The study, carried out by Experian, found the percentage of people aged over 50 living in Rother is set to rise from 51% to 58% by 2029.It currently has the third highest concentration of over 50s in England. The researchers looked at data for district and unitary authorities in England. In West Sussex, about 47% of the population in Arun are aged over 50, rising to a predicted 54% by 2029, the 11th highest in England." (Quoted from article)