[2] At various times, Gallagher has specialised in buying and preparing land plots for residential and commercial development, as well as investing directly in retail parks.
[2] In February 2017, London & Quadrant, a housing association, completed a deal to buy the private land company Gallagher Estates for £505 million.
[4] Gallagher was knighted in the 2020 Birthday Honours for services to land development and the property business.
[5] He is a Tory donor and hosted David Cameron's 50th birthday party at his mansion in Oxfordshire.
[7] Gallagher owns Sarsden House, a Grade II listed 17th-century mansion near Chipping Norton, Oxfordshire.