The UK Justice Secretary, Chris Grayling, says the prison which will be built in north Wales will be 'Britain's biggest'.
He says the announcement is a very important part of upgrading Britain's prisons.
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It's not a bad night all in all! Dry to start but further showers will push in, setting us up for a dull and damp start to tomorrow.
Amina Al-Jeffery, 21, is originally from Swansea and says her father, Mohammed Al-Jeffery, locks her up because she "kissed a guy".
Gavin Thorman, 37, from Caernarfon was jailed for 12 years last year for his part in conspiring to supply Class A and B controlled drugs.