The unthinkable has come to pass. Reform UK’s surprise by-election triumph has plunged Labour into crisis, fuelling fears of collapse. This is the moment gripping the nation — what went so catastrophically wrong, and can Labour survive the growing pressure?

Reform pulls off huge by-election win but rival snatches triple victory as Labour flounders

Francesca O’Brien calls for GB News Senedd ban to be lifted after Caerphilly by-election | GB NEWS

Another busy week of by-elections has seen both the Liberal Democrats and Reform UK gain seats, while Labour and the Conservatives continued their torrid slump.

The Liberal Democrats boast two holds, along with a gain from the Conservatives, while Reform also managed to bag another seat.

It leaves Reform in the driving seat having an aggregate result of 61 (+52) since the 2025 Local Elections, while the Liberal Democrats continue to chase their tails with an aggregate result of 53 (+18).

It remains bleak reading for the Conservatives, who sit on 18 (-21), and even more so for Labour on 14 (-41).

With that being said, GB News takes a closer look at this week’s five by-election results.