UKLad - the WW cancellation was due to the aircraft going tech on the return from Jersey, causing it to divert into East Midlands so on this occasion it was due to a technical problem, no conspiracy theories! :-)
mmeteesside - no problem with 5RR, when we had the EZE Bristol service the same thing happened, although more often than just Sundays as it seemed Jetstream 31s went tech quite often so we regularly had a broken one on stand!
When the Sunday service is operating, chances are it will be parked on 5R or 5 to give it more room.
-HD-