Hadleigh is from Beaconsfield, England, though rarely spends much time at home. When not in the field he is often involved in operational or logistics consulting or enjoying some of his hobby sports including skiing, alpine mountaineering and mountain biking. He is also a keen diver and when recently living and working in a remote camp on Somerset Island, Arctic Canada he organised and conducted a series of dives with the beluga whales near Cunningham Inlet.
He also lectures on a broad range of topics including on some of the fauna encountered in both hemispheres. He also possesses a strong interest in the effects of sea ice and icebergs on local ecology and polar history, including the anthropology of the New World Arctic. When at home he embraces his artistic side (he practiced fine art at Central St. Martins’, London), often painting large canvases inspired by some of experiences.