About 16 shops are closing every day as retailers restructure their businesses and more shopping moves online.
A net 1,234 stores shut on Britain’s top 500 high streets in the first half of the year, according to research by PwC and the Local Data Company.
That is up from 1,123 in the same period last year and the highest since the survey began in 2010.
Fashion retailers saw the biggest declines in the period, followed by restaurants, estate agents and pubs.
However, there were more openings of takeaways and sport and health clubs.
Lisa Hooker, consumer markets leader at PwC, said: “The decline in store numbers in the first half of 2019 shows that there’s been