Pulled up next to a Silver/Grey 650 at the roudabout near the Foster Wheeler buildings at about 17:30ish. Had a big bloke on it with a black Shoei Raid II helmet and Suzuki top box (plate began with RV57...) Was riding the same route as me until just through Arborfield where he went left at the roundabout towards Barkham and I turned right towards Sandhurst.