The Metropolitan Police launched a criminal investigation into alleged unauthorized access of the 'Your Party' database under the Computer Misuse Act 1990, following a report received in September 2025. In October 2026, a 26-year-old man was arrested and released under investigation, and a 39-year-old woman was previously interviewed under caution in connection with the allegations. Neither individual has been charged, nor are they Members of Parliament.

This police inquiry stems from significant internal disputes within 'Your Party', a left-wing political party co-founded by Jeremy Corbyn and Zarah Sultana. The controversy revolves around control over membership data and an alleged £800,000 in withheld membership donations, directly impacting the party's operations and potentially its public credibility.

What the Records Show

Police initiated their investigation after the UK Information Commissioner's Office (ICO) advised that the matter might involve "serious criminal activity" and should be referred to law enforcement. 'Your Party' alleges that MoU Operations Ltd (MoU), a company, is withholding approximately £800,000 in membership donations and membership data. The party has described the situation as MoU directors "going rogue" and holding assets "to ransom".

Timeline

'Your Party' was co-founded by Jeremy Corbyn and Zarah Sultana in the summer of 2025. By September 2025, Zarah Sultana introduced a new membership portal. Jeremy Corbyn publicly disowned this new system, labeling it a "fake membership system". The same month, police received a report regarding alleged unauthorized access to the party's database. The Metropolitan Police confirmed the launch of their criminal investigation in October 2026, which included the arrest of one man and the interviewing of another woman under caution.

What Changed and For Whom

The criminal investigation places individuals under scrutiny and carries potential legal consequences for those involved in the alleged computer misuse. For 'Your Party', the dispute creates internal divisions and poses a challenge to its operational integrity and financial control, as a substantial amount of membership funds and critical member data are reportedly withheld.

What the Subject Has Said Publicly

'Your Party' has stated its intention to pursue legal action against MoU and its directors, identified as Andrew Feinstein, Jamie Driscoll, and Beth Winter. The party claims these directors are withholding funds and data. Jeremy Corbyn publicly rejected a new membership system launched by Zarah Sultana, calling it a "fake membership system".

What We Could Not Confirm

We could not confirm the specific methods or individuals responsible for the alleged unauthorized access to the database. The exact nature of the contractual relationship between 'Your Party' and MoU Operations Ltd, beyond the party's allegations of withheld assets, remains unconfirmed.