The Duchess of Cambridge will join Prince William when he starts the Anglesey ultra marathon today.
But the royal couple will appear without Prince George.
More top news
Cuts to local services will continue across many towns and cities in the UK, despite council tax bills rising by up to 5% this year.
Monday will be windy and mild, with some sunshine across central and southern parts once the morning mist and murk clears.
Malaysia has recalled its ambassador to North Korea as tensions over the investigation into the death of Kim Jong-nam boiled over.