Interim head coach Rob Howley insists Wales won't shy away from competition as a result of recent rugby victories.
"We're Six Nations champions and Grand Slam winners. We need to back that up. We're not going to hide away from it," he told ITV.
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England enjoyed a winning send-off to their Australia tour as they recovered from early problems leaving Wales floundering.
Veteran singer Sir Tom, 75, is gearing up for his first concerts since wife Linda died after a "fierce" battle with cancer in April.
It will be a dry and fine day across the country with plenty of warm sunshine and light winds.