Its not just Ryanair at STN who have problems with Handling agents short staffing. LGW has issues too. Especially with Aviance and EZY. I'm not sure whether AEU have dropped Aviance yet, but FCA sure did!
I had a very memorable flight last summer with a 3 hours wait from chocks to First bags!!! Anyone from Aviance insight??? Nope, but can't blame them. The management don't hire enougth staff. Usually because the handling agent offer their services for a very cheap price to the airlines. Sadly this 'cheap price' means skeleton staffing.
I start to feel sorry for the loaders who must have to work their
off with a full 757 to get the bags in, knowing that there are another 5 aircraft waiting for them after they have finished that one! All arrinving at the same time, with the pax wanting their bags (quite rightly) ASAP.