If I remember correctly, isn't there a Catholic (or at least some denomination of Christian) priest speaking at the funeral of Shirley's dad? If I'm correct (too lazy to check atm), then it's possible that Catholicism, or at least the Church of England, still is prevelent in the Britannian culter, even if it's taken a bit of a back seat to everything else (including the Cult of Geass)
(no subject)