Plaid Cymru has defeated Reform UK in a fiercely-fought Welsh Parliament by-election, with defending party Labour trailing in third.Nigel Farage's party was hoping to win its first seat at the ballot box in the Caerphilly constituency and pledged to "throw everything" at its campaign.

Plaid Cymru has defeated Reform UK in a fiercely-fought Welsh Parliament by-election, with defending party Labour trailing in third.Nigel Farage's party was hoping to win its first seat at the ballot box in the Caerphilly constituency and pledged to "throw everything" at its campaign.