Many thanks to angelofberlin2000 for the VRD Motorsport link. You can see the cropped photo on her tumblr page.
VRD Motorsport originally shared this photo of Dave Vardy and Keanu on instagram back on June 27, 2016 as reported here along with the following comment:
#onlyatgoodwood do you bump into the legend that is Keanu Reeves! Such a nice bloke and looked to be having a fantastic weekend going up the hill on his awesome bikes !!
On August 25, 2016 VRD Motorsport posted part 9 of their Goodwood series and included this same photo along with the following comment by Dave Vardy:
Because of the severe weather in the evenings we relaxed at the Goodwood Hotel under cover and on most nights in the company of ARCH Motorcycles Keanu Reeves! Such a humble guy who has been at the top of the world for most of his life. Along with our sponsors Trimsport we managed to chat to the Hollywood A Lister on a few occasions throughout the weekend.