MEET OUR TEAM
Fi Macklin Founder
Robbie MacPherson Project Manager
Fi is a climate communications specialist and political strategist who has worked at the intersection of multilateral climate policy and community advocacy. She led the Race to Zero in the run up to COP26 with the UN High-level Climate Champions’ team and more recently worked with Global Optimism to shift the climate narrative towards a mindset of possibility. Fi founded the Big Shift Bureau in May 2026.
Robbie recently completed a Kennedy Scholarship at Harvard University focused on energy geopolitics and climate risk. Before this he undertook a Churchill Fellowship in Denmark and Colombia researching experiences of phasing out oil and gas production. Previously Robbie led the secretariat to the Environment APPG and Climate APPG in the UK Parliament. Robbie drives the Big Shift’s political leader engagement and media work.
Jamie Clarke Comms Advisor
David Saddington, Political Advisor
David started his career connecting climate science to public and political action in 2005 working with Prime Minister Tony Blair to put climate change on the national school curriculum. He went on to lead UK Government international climate strategy at DESNZ and FCDO, shaped the public engagement commitments in the Paris Agreement and deliver TED talks on effective climate engagement. David is now a policy advisor at the Big Shift Bureau.
A leading light in climate engagement for over fifteen years Jamie has worked with governments, businesses and civil society whilst writing and presenting on topics. He set up Engaging Climate to work on the most contentious issues having previously led Climate Outreach. Jamie is a senior communications advisor to the Big Shift, guiding the project’s insights-development, messaging work and supporting leaders to navigate misinformation.