This document discusses the importance of investing in regional infrastructure in the UK to drive economic growth. It argues that the UK needs to invest more in key regional city centers beyond London to create a series of interconnected regional growth hubs. Specifically, it recommends focusing investment on improving road, rail, air and maritime links between major cities like Birmingham, Manchester, Liverpool, Leeds and Newcastle to boost trade, innovation and economic activity in these regions. The document also stresses the importance of improving global air links from regional airports to connect UK businesses to fast-growing international markets in Asia and elsewhere.