Skipper Sam Warburton replaces Justin Tipuric and Luke Charteris is in for Ian Evans. In the front row hooker Matthew Rees replaces the injured Richard Hibbard and fly-half Rhys Priestland returns in place of Osprey Dan Biggar. Jonathan Davies returns from a groin injury to replace Ashley Beck.
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One-year-old sheepdog Nell was stolen from a farm on the outskirts of Dolgellau.
Police are investigating an allegation that a young child was approached by a stranger in Llanelli.
An unsettled few days are in store, with rain and wind expected.