Ceredigion will see the Liberal Democrats, Plaid Cymru and Green Party stand against each other in a bid to win the seat, despite the parties agreeing a pro-EU electoral pact.

The three ‘remain’ parties have agreed a deal to stand aside in 11 of the 40 seats in Wales.

The Liberal Democrats and Green Party will stand aside for Plaid Cymru candidates in three of the four seats Plaid is defending in the December election - Arfon, Dwyfor Meirionydd and Carmarthen East and Dinefwr.

Ceredigion, being defended by Plaid’s Ben Lake, is a top election target for the Liberal Democrats and does not form part of the pact.

The Brecon and Radnorshire seat, won by Jane Dodds for the Liberal Democrats in the August by-election, will not be contested by Plaid or the Green Party, with the Liberal Democrats also given a free run as the ‘remain’ candidate in Montgomeryshire.

The parties announced the move, which will also see a pact between the Green Party and Liberal Democrats across the border in England, at an event in London today.

Welsh Labour said that the pact “appears to be nothing more than Plaid and the Lib Dems propping each other up in seats they’re worried about losing”.

"Both will fight it out over Ceredigion because it’s not really an alliance, it’s two parties looking out for their own self-interest,” a spokesperson said.

Plaid Cymru, the Liberal Democrats and the Green Party said they want to maximise the chances of Remain candidates being elected to parliament.

Confirmed prospective candidates for the Ceredigion election at the time of going to press are Ben Lake (Plaid Cymru); Dinah Mulholland (Labour); Chris Simpson (Green); and Mark Williams (Liberal Democrats).

Nominations to stand in the 12 December election close on Thursday, 14 November.