| Armed police are guarding the Commons chamber for the first time on Thursday after pro-hunt protesters burst in as MPs debated a hunting ban.
Eight men were arrested and will be questioned by police on suspicion of forgery, burglary with intent to commit criminal damage and violent disorder.
The head of the Metropolitan Police says the invasion seems an inside job.
Meanwhile, the police watchdog is to examine claims of police misconduct at the hunt rally outside Parliament.
Thirteen people are also being held in connection with clashes with police that broke out at a pro-hunting rally outside Parliament.
It is understood 19 people, including two police officers, were injured, none of them seriously.
But the main focus at Westminster is on the five protesters who burst into the Commons chamber on Wednesday. Another three men were overpowered at the chamber's entrance.
Police officers armed with guns are now positioned by the entrances to the Commons chamber - which previously have been guarded just by the serjeant-at-arms' staff.
Commons leader Peter Hain has called the incident "deadly serious" and says Parliament must modernise its security procedures.
But Speaker Michael Martin said he did not want security questions raised with Mr Hain in the Commons at Thursday lunchtime, saying he did not want such issues raised publicly.
The House of Commons commission would be addressing the issues after Parliament's break for the party conference season.
Clashes
Scotland Yard said those arrested over Wednesday's Commons protest were aged between 21 and 42.
Metropolitan Police Commissioner Sir John Stevens says a full investigation has been launched, with police seizing documents and articles.
Amongst those understood to have been arrested are England polo player Luke Tomlinson, 26, a close friend of Prince Harry, Otis Ferry, 21-year-old son of rock star Bryan Ferry, and point-to-point jockey Richard Wakeham.
Mr Wakeham's father, Anthony, backed his son's actions, saying: "The people in the countryside have got no option now."
The men are being held at Charing Cross police station, where a small band of pro-hunt demonstrators have gathered.
Despite the protest, MPs backed a ban on hunting in England and Wales by 339 to 155 votes.
However, a ban, which will be debated in the Lords next month, is not due to come into force until July 2006.
Commons Speaker Michael Martin told MPs police were investigating what appeared to have been a "carefully planned operation".
Inside help
He said: "Eight protesters were let into the House of Commons using a forged letter inviting them to a meeting in the committee corridor.
"Once there, they were led into the small stairway to the north end of the corridor - probably by a pass holder who was clearly exceeding his or her authority."
It was not clear whether the pass holder who apparently helped the intruders was an MP, a reporter or an employee of a member, he said.
It has emerged the BBC was tipped off about the planned intrusion on Wednesday morning by one of the protesters and told of a "dry run" carried out on Tuesday.
The BBC said it had not been certain the incident would take place and the information had come from somebody the journalist had never met. No violence had been threatened, it added.
Harangued
The incident has raised questions about whether Parliament's serjeant-at-arms and his staff, who traditionally wear tights and breeches, should be replaced by a security director and police.
MI5 and the police had already been reviewing security at Parliament, where a Tony Blair was hit by a flour bomb in May. Their report will be delivered within the next two weeks.
The Metropolitan Police is demanding a review of the rule which bans police officers from banning the Commons chamber unless invited by the serjeant-at-arms.
Downing Street says there was "deep concern" about the protest at Thursday's Cabinet meeting.
Mr Blair's spokesman said it was initially a matter for the Commons authorities but he added: "The need for urgency is obvious."
Shadow home secretary David Davis told BBC Radio 4's Today programme: "What we have witnessed is something which puts a large number of people at risk, not just in the House of Commons - it will encourage terrorists elsewhere." |