The first electoral impacts of Boris Johnson’s “Partygate” scandal have made themselves felt across Britain and Northern Ireland, with the prime minister’s Conservative party losing just under 400 council seats across the nation, according to the latest counts.

Unsurprisingly, Labour and the Liberal Democrats were the big winners, with Keir Starmer’s Labour picking up 252 seats and Ed Davey’s Lib Dems 189. The Green party and the centre-left Scottish National Party also made significant gains.

According to BBC analysis, the Conservatives would lose 112 seats at a general election if these voting patterns held. There would be a hung parliament, as no party would have an outright majority.

In London, Labour won three councils from the Tories, taking control of Westminster, Wandsworth and Barnet. It was their first ever win in the wealthy Westminster borough, which covers neighbourhoods including St John’s Wood, Knightsbridge, South Kensington and Mayfair.

Labour also made gains in the “red wall” areas of northern England – traditionally solid Labour strongholds that fell to the Tories in Johnson’s landslide victory in 2019 – but it was not the unequivocal performance Starmer would have hoped for.

“[Voters there have] certainly fallen out with Johnson, but they’re not ready to take the leap with us yet. It’s not just Corbyn; the view is quite entrenched and will take a long time and a concerted effort and persistence to recover from,” one former senior Labour MP told The Guardian.

In Northern Ireland, the republican Sinn Féin is on track to be the largest party in the assembly, taking the reins from the Democratic Unionist Party for first time since Northern Ireland was founded a century ago.