sources, who all said it was accurate.

The fall may be greater than 10% because reports suggest there was a higher peak in membership just after the 2017 snap election, of around 575,000, that wasn't officially released.

A Labour source today told the Mirror the total number of members had never reached 600,000, as some reports claim, but suggested it had crept into the 570,000s.

A senior Labour insider said: "Everyone knows it's declined. It's quite striking that they talk about resignations being lower than those joining but don't talk about lapses."

The figures we were shown include a regional breakdown.

They say that as of last week there are around 104,000 members in Greater London, 68,000 in the North West and 62,000 in the South East.

There are also around 48,000 members inYorkshire and the Humber, 44,000 in the South West, 39,000 in the East, 36,000 in the West Midlands, 33,000 in the East Midlands, 26,000 in the 'North' and 26,000 in Wales, the figures show.

(Image: Getty Images)

Of the existing members more than 30,000 are in arrears, according to the figures.

It comes after Labour said reports of a drop from 650,000 to 500,000 were "simply not true" and "invented".

Blasting ITV political editor Robert Peston, who tweeted the figures, the party's press team tweeted: "Some attention to the basic rules of reporting would help avoid these mistakes."

Labour also condemned reports in the Sunday Times that the party had lost "up to 150,000 members" in recent months.

However, the party has not so far accepted calls to end the speculation and release an