I suspect I should have warned Max that the Welsh have their eccentricities about station labelling!! and that Cass Newydd was Newport!!! Sorry!
LtS, I am picking Max up to fetch him to the Black Lion, so No problem (I hope) I know you may feel this ais an excessively optimistic view of things but at least he will have someone with him with some knowledge of the vagaries of London's sometime eccentric transport system and how to get around it.