Five hours just seemed a long time to wait in Exeter if only weather when other aircraft were able to land at CMF, and of course there would always have been the option to divert to Lyon. I see that there was also a long delay on a BHX>CMF flight later in the day, so perhaps airlines just erring on the side of caution. Thanks alphagolf and RedFlyer for your thoughts.Maybe weather was poor at CMF, hence the divert to LYS...... don’t know if this was the case but would account for it if not technical.