Pauline Neville-Jones, the Shadow Security Minister, has called for Ibrahim Moussawi, a known extremist with links to Hezbollah, to be prevented from entering the UK.
Mr Moussawi, who has made a number of remarks that are extremist, anti-Semitic and inflammatory, has been invited to speak at a course on Political Islam at the School of Oriental and African Studies on 25 March 2009.
Baroness Neville-Jones has written to the Home Secretary, Jacqui Smith, to ask her to use her powers to deny him entry:
"In October last year you introduced what you described as 'tough new measures' to deny entry to extremists. These measures included 'creating a presumption in favour of exclusion in respect of all those who have engaged in fostering, encouraging or spreading extremism and hatred,' Mr Moussawi has so engaged.
"In line with your 'tough new measures', I trust that if Mr Moussawi applies for entry, you will use your powers to exclude him."
Mr Moussawi was previously allowed into the country to speak publicly in December 2007 and again in February 2008. On both occasions the Conservative Party called for his exclusion on the grounds that he was likely to stir up extremism if not promote violence.