OBR says ‘external person’ may be behind early release of budget report as cyber security expert brought in – UK politics live

The former head of the UK’s National Cyber Security Centre will be involved in the OBR’s investigation into what happened

Ask the Guardian your budget questions

Richard Hughes, chair of the Office for Budget Responsibility, has said that “an external person” may have been involved in the accidental release of its budget report yesterday.

In an interview on the Today programme, he said that he had written to the chancellor apologising for the fact that the document became public about 40 minutes before she announced the budget – allowing people to learn all the details in advance.

He also said that that Prof Ciaran Martin, the former head of the UK’s National Cyber Security Centre, will be involved in the OBR’s investigation into what happened.