Book excerpt: Andrew Lawson has journeyed the length and breadth of the land photographing English Gardens at their most glorious. Through all seasons, from magnificent country houses through to many private gardens full of character, charm and eccentricity, to those of tiny cottage plots, bursting with a colourful array of flowers and vegetables. With it's index and list of gardens to visit, it can also be used as a guide to the most ravishing gardens in the country.