Former UK ambassador to the US Peter Mandelson has been arrested on suspicion of misconduct in public office.

Mandelson was fired and has been under investigation over his alleged ties to Jeffrey Epstein.

It comes as Australian Prime Minister Anthony Albanese has written to his UK counterpart Keir Starmer, calling for the former Prince Andrew to be removed from the royal line of succession.

Australia correspondent Donna Demaio told Ryan Bridge the line of succession is a very complex legal framework.

She says the charges require all Commonwealth countries to pass new laws, but Albanese says they're grave allegations and Australia takes them very seriously.

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Long term benefits could justify the Crown pouring more money into Genesis Energy.

The company's revealed a $400 million capital raise to up its investment in renewables.

Now the Crown's purchasing $200 million worth of new shares to maintain its 51% shareholding.

Major Electricity Users' Group Chair John Harbord told Ryan Bridge Genesis is focused on storing electricity for dry years.

He says that backup supply is the most important electricity for the system.

But Harbord says the investment doesn't do much in the short term for affordability issues.

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Airways New Zealand is pushing for the Civil Aviation Authority to lower the age New Zealanders can get an air traffic control licence amid worries our talent's being poached overseas.

The air traffic control provider's sounded the alarm during an address before a Parliamentary Select Committee.

CEO James Young says there's a global shortage of controllers, and in other areas like controller training.

Aviation Industry Association CEO Simon Wallace told Ryan Bridge a licence can currently only be obtained at 21 or older.

He says this is something Airways has brought up, and the regulator should be looking at this.

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