“At Seahorse we’re driven by our passion for enhancing the natural environment and tackling climate change. We provide expert policy advice, impactful communications programmes and winning campaigns for clients who share our vision for a cleaner, greener, more sustainable tomorrow.”
— Isabella Gornall, Managing Director



Isabella is an experienced and highly-networked environmental strategic communications professional with a political background in Westminster and Brussels. She founded Seahorse following a corporate background at two of Europe’s leading communications consultancies Burson-Marsteller, part of WPP, and Maitland, part of Havas, where she headed up their environmental practice. For a number of years, Isabella was Policy Adviser to Zac Goldsmith MP where she helped shape his polices; led the development of policy proposals to Government and managed his international environmental campaigns.

Isabella currently sits on the Boards of the Conservative Environment Network and UK100, the ambitious network of UK Cities committing to 100% clean energy. She graduated from the University of Southampton with a BSc (Hons) in Environmental Science and recently completed the Smith School of Enterprise and the Environment Sustainable Finance Course at the University of Oxford.

isabella@seahorsecomms.co.uk  |  Twitter  |   LinkedIn 



Costanza joined Seahorse in September 2018 after three years as a policy adviser in the politics team of leading think tank Green Alliance. She has experience of collaborating with stakeholders across the sector to promote political leadership on the environment including on climate change, air pollution, Brexit, marine protection and low carbon trade. 

Before Green Alliance she worked as a research consultant for the International Institute for Environment and Development, focusing on the political economy of low carbon and climate resilient development. 

She holds an MA in Environment, Development and Policy and a BA in International Relations, both from the University of Sussex.




Amy joined Seahorse in April 2018 as Head of Research having been the Research and Communications Officer at the Blue Marine Foundation. She previously worked as a Parliamentary researcher in the House of Commons, a market analyst at Camborne Energy Storage, and carried out work experience in the European Parliament. Amy studied Geography at the University of Oxford graduating with a first class degree and is currently studying a Masters in Conservation at UCL.




Alastair started his early career working for BusinessWeek International in New York and then founded and built two award winning communications agencies - Scope Communications and Consolidated Communications Group (PR Week’s agency of the year 2001). 

In 20O4 he became CEO of Reed Exhibitions Ltd before starting a portfolio career in 2010. Since then he has been Chairman of Dods Group Plc, Blue Rubicon, Hanover Communications, Finn PR, Longitude Research, Nano Interactive Group and a strategic advisor to Centaur Media Plc and Gartner Inc. He has also been chairman of Jo’s Cervical Cancer Trust and Vice Chairman of SSAFA- the armed forces charity.



Fiona has more than 30 years’ experience in the financial and corporate communications world. She has worked in house, most recently as SVP Global Communications at InterContinental Hotels (IHG). She was a Partner and Head of the Leisure and Hospitality offer at Brunswick for 13 years and her clients included SAB Miller, Thomas Cook, Astra Zeneca, William Hill, CVC Capital Partners, IHG, Diageo, Ascot Racecourse and The Lawn Tennis Association. Fiona currently sits as a Magistrate in London.

Advisory Council



Ben is the Chief Executive Officer of Menhaden Capital, a London-listed investment trust which seeks to generate long-term shareholder returns by investing in businesses and opportunities which are delivering or benefiting from the more efficient use of energy and other resources. Sectors of focus include industrial process and material efficiency, energy efficiency and storage, power generation, and waste and water. 

Ben is a Trustee of the Children’s Investment Fund Foundation (CIFF), one of largest climate change focused philanthropic funds in the world, and chairs the Goldsmith family’s JMG Foundation, which focuses on environmental issues. Ben sits on the Board of the UK Government’s Department for Environment, Food and Rural Affairs (DEFRA) and is also Chairman of the Conservative Environment Network.

Shaun Spiers
Executive Director, Green Alliance

Shaun is Executive Director of Green Alliance and Chair of Greener UK. He was chief executive of CPRE (Campaign to Protect Rural England) for 13 years. Previously he led ABCUL, the credit union trade association. From 1994 to 1999, he was an MEP for London South East, serving on the European Parliament’s Agriculture and Rural Affairs Committee.

Shaun is a trustee of Sustain, the alliance for food and farming, and was a founder trustee of Civic Voice. His book, How to build houses and save the countryside, was published in March 2018.


Clare Brook
CEO, Blue Marine Foundation

Clare joined BLUE in November 2014 as CFO and then became CEO in March 2015.  Prior to that she was a pioneer of environmental investing, managing funds at Jupiter, NPI and Henderson. In 2000 she established the socially responsible investment division at Aviva and in 2009 she founded WHEB Asset Management, a specialist sustainable investment firm. As CEO of the Blue Marine foundation, Clare aims to combine the rigour of the investment world with her passion for solving environmental problems.