Outsider rumours that 737QC G-ZAPW is leaving the fleet within the next few weeks, leaving just the 737F G-POWC for the mail service. Not sure how that would work... hand a route back to Jet2? ZAPW has been mainly used on the Edinburgh route recently with POWC to Belfast, according to FR24.
Also noticed A320 G-POWI operating for Novair over the weekend on the Scandinavian Sun-runs.