As ever, preparation would help here Kim... As the Jorvik (and BBL) give plenty of advance route planning time we should know pretty much exactly where we are going to be going on the day - in advance of the Jorvik I made draft emails for all my planned stops, with the correct details in the subject line (including an estimated odo reading)
So it was simply:
Take picture
Attach to the right draft email
Tweak odo on email if needed
Put the Rally email address in the To Field (again, the Rally Contact was pre-named so that it would be first to appear as I type)
Click Send
Probably took about the same amount of time as taking a picture on a camera and making a note of time and odo, but then I didn't have to arrive back at Rally HQ in time to write it all down in a list.