Originally Posted by
SWBKCB
RYR have previously been operating these routes with EU registered a/c, presumably on a temporary dispensation from the CAA which has expeired or been withdrawn.
Without wanting to stray too far into Jet Blast territory, another "Brexit bonus"

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I suspect this a case of Ryanair being their characteristically bombastic selves and assuming the UK CAA would just turn a blind eye because, well, they're Ryanair - God's gift to British air travel.
I imagine one carrier quietly happy if indeed the CAA has chucked a spanner in Ryanair's works is Jet2 on the Moroccan roures. Who knows, perhaps it was they that were the catalyst?