This Buckinghamshire civil engineer is best known for building sports facilities, such as the Amex stadium in Brighton. However, most of its work draws on its expertise in logistics facilities, infrastructure, demolition and rail projects. During the pandemic, just four of the group’s 50 projects have been suspended for more than a week, and senior staff have accepted salary cuts of 20%-50% to help contain costs. Founder and chairman Paul Wheeler, 66, leads the group, with chief executive Mike Kempley, 58.