Having started the thread, I’m pleased by the quality of the outcome and responses.
It is interesting, however, to see how the underlying issue is subsumed by more general issues.
I mean :
1. Ryanair should not be able to cut costs (admirable) by inadequate employment practice (lack of training, use of low-quality untrained unbadged subcontractor staff)
2. there is an issue of a discrepancy between 2 airports, both in UK and a possibility of “misunderstanding” (sic, see 1 above) the significance of ‘devolved powers’. Travel is ‘devolved’, but national security is not. For Ryan to disallow a traveller on a RETURN leg internal flight is frankly unbelievable. Photo id is good, and face and name should match. Simple. As they say, “you couldn’t make it up”