The by-election was caused by the death of its Member of Parliament Malcolm Wicks.
In a mini-reshuffle on 10 November 2006, following the retirement of Lord Sainsbury, Wicks was appointed as Minister of State for Science and Innovation in the same department.
In December 2012, following the death of Croydon MP Malcolm Wicks, Bentley was criticised in the UK press after remarking that the MP's death was "the Lord's justice" for the role Wicks played in barring Bentley from entering the country.
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