I e mailed bupa re timing glitch and got the below. Looks like they are going to avoid accepting a large scale problem which is ridiculous. I guess most won't complain as they gained two minutes and seem to be able to give reason as to why they feel its legit.
Could please send us your garmin data I shall pass it across to the results team to look into?
As far as they are aware there weren’t any problems on the day.