Siân Berry


If you're a constituent, contact Siân:
[email protected]


Media contact:
[email protected]
020 7983 4424

Responsibilities for 2019-20

  • Member of the Budget and Performance Committee
  • Member of the GLA Oversight Committee
  • Member of the Housing Committee
  • Member of the Police and Crime Committee


Sian Berry has lived in London since 1997 and has worked as a medical copywriter, PA, website manager, project manager for a digital start-up, author and transport campaigner before being elected to the London Assembly in 2016.

She has been a local councillor in the Highgate ward of Camden since 2014. She was one of the Green Party's Principal Speakers from 2006 to 2007, stood as candidate for London Mayor in 2008 and 2016 and is currently party Co-leader with Jonathan Bartley.

In 2003 Sian co-founded the Alliance against Urban 4×4s, was a driving force behind the Reheat Britain campaign that secured a boiler scrappage scheme in 2009 and worked for Campaign for Better Transport from 2011 to 2015. She is a patron of the British Humanist Association and is a trustee of her local nature reserve.