In wild, abandoned country, how do you find your place?

"Britain is awash, the sea creeps into the land, brambles and forest swamp derelict towns. Food production has moved overseas and people are forced to move to the cities for work. The countryside is empty. A chorus, the herd voice of feral cows, wander this newly wild land watching over changing times, speaking with love and exasperation. Jesse and his puppy Mister Maliks roam the woods until his family are forced to leave for London. Lee runs from the terrible restrictions of the White Town where he grew up. Isolde leaves London on foot, walking the abandoned A12 in search of the truth about her mother."--Provided by publisher.