reasonable shot, suggest taking a step back, getting lower and trying to get it in landscape with the rider in either the left or right third to show where they are going or where they have come from....and may be come context in front of the rider
nice bit of motion blur on the wheels, but i would be tempted to forgoe this to get a crisper image...
looked through your other flickr shots - nice pan of Peaty - the guy is a legend...
JB