The two men who pelted the prime minister with purple flour on Wednesday will not be sent to prison.

Ron Davis and Guy Harrison have only been charged with public order offences which carry a maximum £1,000 fine.

The fathers' rights campaigners will appear at Bow Street magistrate's court next week.

Commons leader Peter Hain yesterday announced that that the parliamentary advisory committee will meet on Monday to discuss MI5 recommendations on tightening security.