Following the Arun, then through Amberley village and Parham Park. After a steepish climb we take the South Downs Way back to Amberley.
Buy OPDR to Amberley. Dep. Victoria (Bognor Regis/Portsmouth Hbr. train) 09.05 arr. Amberley 10.29 (Clapham Jct. 09.12, E. Croydon 09.23). Train divides at Horsham; listen to announcements and be sure to be in the right part, usually the rear. Picnic lunch in Parham Park. Drink stop at the Crown Inn in Cootham OL10 Leader Mike Coyle

Photo: Across the Arun (1) by Peter Trimming