Semblers Assemble!
Meet our awesome team…
Everyone at Semble truly believes in what we do – bringing people together to make positive change. We’re a small and passionate team and like to our community, we’re doers, always looking for solutions and ways to improve the way we work.
Amanda
CEOAmanda Horton-Mastin
Amanda is responsible for making sure that Semble delivers on its mission of connecting organisations to communities in order to drive positive change. After 20+ years at Comic Relief, she believes passionately in using creativity to drive social impact and loves working with companies who have purpose. When not running, swimming or playing tennis she can be found cultivating dubious veg in her allotment and making wine in France.
Dominika
HEAD OF CAMPAIGNSDominika Jarosz
Dominika is passionate about growing movements that create real change and reconnect people with nature to make life better for people and planet. She can usually be found either cooking up a feast, outdoors in nature or with her head in a book, sometimes all at once.
Hugo
SENIOR PROJECT MANAGERHugo Pengelley
Hugo works on a range of Semble projects, with a particular focus on our community funding campaigns. When not at work he is happiest up a mountain, on a rock face or in/on/under the sea.
James B
PROJECT MANAGERJames Baker
James B manages a variety of our client campaigns, but with a particular focus on employee volunteering. He began as an intern and has developed into his current role across 4 years with the company. In his spare time James is an aspiring cook and avidly supports Arsenal Football Club.
Ségolène
SENIOR PROJECT MANAGERSégolène Méheust
Ségolène works across our movement-building and community campaigns. Passionate about creating positive change, she has delivered projects with a focus on sustainability and social impact for NGOs, startups and multinationals. She’s happiest by (or in) the sea, on a rowing boat, hiking (mainly towards a pub) and discovering new places.
James D
HEAD OF PRODUCTJames Dowdell
James D heads up our product team, overseeing the development of our core platform and the digital products we design for our campaigns. James is into his cycling, loves surfing and general outdoor adventuring in his recently converted campervan.
Mark
CO-FOUNDERMark Shearer
Mark is a co-founder of Semble, and works on strategy and with developing larger corporate campaigns. He has a deep-seated passion for protecting nature, having grown up watching David Attenborough documentaries from under the kitchen table. In his spare time, you’ll find Mark enjoying the great outdoors, or swinging (and missing) a tennis racquet or golf club.
Perrine
TEAM SUPPORT OFFICERPERRINE RAUZY
Perrine is Semble’s team support officer; she works across the campaign, marketing, product and operations department. She wants to help make the world a better place and her key interests include environmental sustainability and feminism. She loves playing connect 4, all of Italy and her cat Rosie.
Lorna
MARKETING MANAGERLorna Cumming-Bruce
Lorna believes in the power of storytelling to inspire real change; and spends her days devising wonderful ways to celebrate community action. She brought previous experience in international development and journalism to the Semble team. When not at her desk she can be found wild swimming or with her nose in a book.
Chloe
COMMUNICATIONS OFFICERChloe Lyons
Chloe works to ensure Semble comms are inspiring and impactful. She’s dedicated to nourishing, strengthening and growing our community through awesome communications. Inspiring and empowering others is what lights her up. When not at work Chloe is happiest in the sea, in a forest, on a yoga mat or lying in the sun.
Josie
ASSISTANT CAMPAIGNS MANAGERJosie Howard
Josie is an Assistant Campaigns Manager, bridging campaigns and community with her knowledge of what’s going on on semble.org. Before coming to Semble she worked in sex and relationship education and advocacy and studied Latin American culture. She spends her free time figuring out how to grow vegetables, making tacos and drinking endless cups of tea.
Dan
SENIOR PROJECT MANAGERDan Wooley
Dan believes in the power of the local, and that from small acorns grow mighty oaks. Having spent many years developing volunteer-led campaigns and working with community groups, Dan has now found his natural home at Semble. Originally from the Lake District, Dan is happiest when outdoors and active; he is currently encouraging Semble to recruit a border collie onto the campaigns team.
Keir
CAMPAIGNS AND PROJECTS OFFICERKeir Barraclough
Keir is a project officer based in Semble’s Bristol office. Most of his time is spent on two of our movement campaigns, Outdoor Classroom Day and Backyard Nature. One of Keir’s main interests is food equality and outside of Semble he runs a small community food waste project.
Edward
FINANCE DIRECTOREdward Leek
Edward is Finance Director at Semble, working with the team on business planning and financial control. As well as Semble he also works for a portfolio of other SMEs on their finance and growth plans, and in his spare time has been working with AFC Wimbledon on the funding of the new stadium at Plough Lane.
Sophie
SENIOR CAMPAIGN MANAGERSophie Forge
Sophie looks after the Backyard Nature campaign and also supports the Carling Made Local fund bringing funds to grassroots projects across the UK. After hiking, podcasts and sometimes spin, her biggest passion is food. She loves to read about it, taste new things and cook like no one’s watching.
Roger
CHIEF OPERATING OFFICERRoger Mawle
Roger believes that businesses must be a force for good in society. And that’s why he joined Semble where he heads up operations- making sure that things just work so that our brilliant team can get on and deliver. When not at work Roger can normally be found playing with his kids, exploring the great outdoors or sharing good food with friends.