'Serious questions' remain about how a prankster was able to get within feet of the prime minister during her party conference speech, a senior Norfolk MP has said.

Eastern Daily Press: Comedian Lee Nelson confronts the prime minister Theresa May during her speech. Picture: OWEN HUMPHREYS/PAComedian Lee Nelson confronts the prime minister Theresa May during her speech. Picture: OWEN HUMPHREYS/PA (Image: PA Wire/PA Images)

Mid Norfolk MP George Freeman, chairman of the Conservative Policy Board, said of comic Simon Brodkin's stunt: 'There should be some very serious questions – that could have been a terrorist.'

Mr Brodkin, also known as Lee Nelson, handed Mrs May a fake P45 during the keynote speech in Manchester on Wednesday, October 4.

He was bundled out of the hall and arrested to keep the peace.

MORE: Coughs, splutters and a P45: Stoic Theresa May battles through speechHe was later released because he had legitimate accreditation to attend the event, Greater Manchester Police (GMP) said.

Mr Freeman added: 'My understanding is he's a comedian, he's often used by the BBC and questions will be asked about how he was allowed to get that close.'

GMP Chief Superintendent John O'Hare said people entering the conference had to go through 'airport-style' searches.

However he added: 'In light of this we will be reviewing the accreditation process with the Conservative Party.'

A Conservative spokesman said: 'In light of the arrest during the prime minister's speech we are working with the police to review the accreditation process and security arrangements for party conference.'