He resigned over the renewal of the British Trident system in March 2007 .
Between 2005 and 2007 , Griffiths served as Deputy Leader of the House of Commons , deputising for both Geoff Hoon and then Jack Straw .
Griffiths resigned over the renewal of the British Trident system in March 2007 .
Between 2005 and 2007 , Griffiths served as Deputy Leader of the House of Commons , deputising for both Geoff Hoon and then Jack Straw .