Labour raised almost £4.4m in the second full week of the general election campaign – close to 15 times the amount brought in by the Tories.
Rishi Sunak’s party took in just under £300,000 between 6 and 12 June.
Reform UK raised more than double this figure, with £742,000 taken.
Election latest: Sunak faces more question on betting scandal
However, £500,000 of this money was handed over by Britain Means Business, a company run by Reform’s deputy leader Richard Tice.
The Liberal Democrats also took in more than the Conservatives, raising £335,000.
The Green Party raised £20,000.
Labour raised £4,383,400 – and its partner the Co-operative Party raised £60,000.
The Conservatives raised £292,500, according to Electoral Commission figures.
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