Wales rarely makes the international news headlines. However, last week it produced a political earthquake that saw the UK’s ruling Labour Party lose an election in Caerphilly for the first time since 1910. Labour has dominated Welsh politics for much of the past century, even keeping much of its support there in 2019, when the party lost many parliamentary seats in the so-called red wall in the English North and Midlands.

Labour come third with just 11% of vote in a seat that has long been one of its strongholds

Plaid Cymru’s byelection victory signals a seismic shift in Welsh politics that will rattle Westminster