Barradell pursued a career in the information and communication technology sector, playing a variety of marketing management roles for such companies as Unisys and Hewlett Packard.
Since 2016, he chairs the Sir Simon Milton Foundation, a charitable organisation set up to promote the vision of society developed by the Conservative politician Sir Simon Milton, Leader of Westminster City Council from 2000 to 2008.[4]
Town Clerk successor
Ian ThomasCBE succeeded as 51st Town Clerk of London in February 2023, after the ten-year tenure of John Barradell ended on 31 December 2022.[5]