Labour demands names of guests at champagne event Kwarteng attended

Kwasi Kwarteng had set out his mini-budget, which cut tax for high earners, before the reception attended by a number of property developers and fund managers. Photograph: Maja Smiejkowska/Reuters

Pressure is growing on the Tory party to provide a full list of attendees at a private champagne reception attended by the chancellor, Kwasi Kwarteng, hours after he delivered his mini-budget.

Anneliese Dodds, the Labour chair, has written to her Conservative counterpart, Jake Berry, calling on him to release a list of those in attendance and whether they pledged donations or paid a fee to be there.