Hundreds of newly elected lawmakers trooped excitedly into Parliament on Tuesday after the U.K.’s transformative election brought a Labour government to power.

The halls of the labyrinthine building echoed with excited chatter of the 650 members of the House of Commons — 335 of them arriving for the first time.

That compares to 140 new lawmakers after the last election in 2019.

The seat of British democracy took on a back-to-school feel, from the rows of lockers temporarily installed in wood-paneled corridors to the staff holding “Ask Me” signs ready to help bewildered newcomers.

The new House of Commons includes the largest number of women ever elected — 263, some 40 per cent of the total — and the most lawmakers of colour, at ninety.

The youngest new lawmaker is Labour’s Sam Carling, at age 22.