Previously the Party's female Principal Speaker, and national Campaigns Co-ordinator before that, she is one of the founders of the successful campaign group the Alliance Against Urban 4x4s.
In the 2005 General Election, Siān was our candidate for the Hampstead and Highgate constituency, and contested the Kentish Town by-election in 2006.
She has campaigned in her local area of Camden for a greener development in the huge Kings Cross railway lands area, and one which provides high levels of social and affordable housing. She is a well known local activist in Camden and narrowly missed being elected to the council.
Famous for their mock parking tickets for city four-wheel-drives, the Alliance Against Urban 4x4s started in London in 2003 and is now a national campaign demanding sensible measures to stop big 4x4 vehicles taking over our cities. The group recently celebrated persuading the current Mayor of London to propose a higher congestion charge for 4x4 vehicles and other gas-guzzlers.
Siān studied engineering at university and her professional background is in medical communications, where she worked for several years as a copywriter. These skills give her a straightforward and accessible approach to promoting green issues, focusing on what people can do today to make a difference, and on what governments need to do to make greener lives easier and cheaper for everyone.
As spokesperson for the Alliance, and a well-known Green Party figure, Siān has received wide coverage in national and international newspapers and has appeared on numerous TV and radio shows, from Radio 4's Today programme to Richard and Judy. Her calm, cheerful and persuasive advocacy has stimulated a lively public debate about 4x4s, and has helped to raise the environment further up the public agenda.
One of the first campaigns Siān was involved in after entering politics was to stop the invasion of Iraq, and she has been a vocal supporter of Brian Haw's six-year protest in Parliament Square.
Siān recently launched the Census Alert campaign to prevent American arms company Lockheed Martin from being contracted to run the 2011 UK Census.
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