I believe the pipe was actually left in the roof cornice intentionally as a 'concealed object'. Objects of various types - frequently shoes or garments, but also dead cats or household items - were traditionally hidden around houses and other buildings to protect them from evil spirits. We do not have to accept the superstition to find the practice nevertheless intriguing.
On a scrap of paper, Mr Sutton had written 'The bicycle on the pipe bowl is a Velocipede 1865.' I am not sure whereabouts it was found, but the date would suggest one of the transepts.
I am taking advice as to what should best be done with the object. It could be placed back in the roof, although we don't know its precise historic location; it could be loaned to the museum for display; or it could be kept here in church, ideally to be displayed if a secure cabinet could be procured. In any event, it provides a fascinating glimpse into past traditions.