Another concern might be is that so many Cambridgeshire residents are related and their genes having failed to be diluted by outsiders can cause individuals medical problems. This is often manifest by the appearence of celestial lights and bright spots in the sky sometimes which in this case was viewed by many.
On a serious note I am sure you have viewed something unusual and it happens all the time. Take no note of the cynics views many of whom spend too much time on various websites and would never see anything unusual as they never go out apart from their weekly collection by Dial-a-Ride.