Alistair Appleton helps a couple who have never lived in an older home, but who are now ready to fall for a bit of period charm in either Norfolk or Suffolk. With a £270,000 budget and three lively whippets to please, they are after a dog-friendly garden and a slice of East Anglian architectural history to call home. Alistair also meets a willow farmer and discovers how this wonderfully sustainable crop is being woven into the future