Welsh Liberal Democrat leader Kirsty Williams will be the main speaker on the second day of her party's conference in Newport. UK Government minister Jenny Willott will also address delegates.
During the conference's first day, Deputy Prime Minister Nick Clegg committed the Lib Dems to a wide-ranging transfer of power from Westminster to Cardiff.
He said the recent Silk Commission report, which recommended devolution of policing, youth justice, energy decisions and teachers' pay, would become the 'blueprint' for his party's 2015 manifesto.
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Business Secretary Greg Clark said the UK Government was not prepared to back the Swansea Bay tidal lagoon project.
The pair met after Sheeran's concert for food at Park House restaurant in Cardiff.
An absolute sizzler of a week to come with blue skies and sunshine for all, with temperatures rising!