That was me.
Got a bit lost in Abingdon, as the road layout and signs don't match up with Google Maps/Streetview. It was me, my wife (Gladius 650) and our friends (delinquent OAPs Alec & Marion - TDM850 & Virago 750) on our way to the MAG AGC near Wallingford.
We only went round 3 times, so not sure which lap you saw us on!