What are the reasons for the slowdown in economic dynamism in the UK (e.g. increasing productivity gaps between leaders and laggards and falling rates of reallocation such as job creation/destruction). What could be done to improve dynamism?

Background

Sustainable economic growth is at the heart of everything HM Treasury is working to achieve. The Growth section includes key questions that are expected to support the government in taking action to fix the foundations of the economy, rebuild Britain and make every part of the country better off.