My latest TV show has sent me on a European tour for the past few weeks and I’ve eaten all manner of amazing local specialities. But of all the things I crave when I am on the road, it is the humble British pie. I can’t deny that I love a good quiche Lorraine, a sweetly spiced kanelbullar or a custard-filled pastel de nata, but a rich and hearty savoury pie, like this wild mushroom and leek one, is just the pick-me-up for autumn entertaining.