Andrew Swift walks from the picturesque village of Biddestone, taking in ducks, pigs, a ruined fulling mill, a church once sacked by Parliamentary soldiers, packhorse trails, hidden valleys and dark woods. FACT FILEStarting point: The Green, Biddestone (ST844736: SN14 7DG)Length of walk: 8 milesApproximate time: 4 hoursPubs: White Horse, Biddestone...