Operator Stena Line says it has reassured workers that its decision to sail its new ferry under a Cypriot flag will not hit their rights but a Welsh Assembly Member (AM) fears "serious implications" after contacting tax chiefs.

The £160m Stena Estrid went into service on the Holyhead to Dublin route last month.

During its sail from the Chinese shipyard where it was built to North Wales the ship's registration was changed - due to Brexit - so that on paper it sails under the flag of Cyprus.

Fears were raised last month about how this could affect the rights of mariners working on the vessel but Stena did not respond at the time.

Now tax chiefs and Stena have written to Ynys Mon AM Rhun ap Iorwerth in letters seen by North Wales Live which has much more on the story.