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London ACM SIGGRAPH is a local non-profit, volunteer organization run and made up of local professionals. We host events for the Computer Graphics community in London, reach out to other communities and aim to promote contact and information exchange.

London’s computer graphics community

If you would like to contribute, please consider becoming a member and/or volunteering for the London ACM SIGGRAPH chapter. Meet the team below.

Meet the Team

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Kate Gabriel Chair of the London ACM SIGGRAPH Chapter

As CHAIR of the London ACM SIGGRAPH Chapter, Kate oversees the activities of the chapters, and reaches out to potential partners, sponsors and event opportunities.


Kate has over four years of experience in film and TV production working as a Lighting Technical Director (TD) and a Nuke Compositor. Kate also has experience working on a full CG stereoscopic feature film, TV commercials and TV series. She was born in the Czech Republic, where she graduated with a Master of Art in Fine Arts. Kate additionally helps to organize an annual VFX conference in Prague.

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Benoit Terminet Schuppon Co-Founder & Vice-Chair of the London ACM SIGGRAPH Chapter

As VICE-CHAIR of the London ACM SIGGRAPH Chapter Benoit helps to oversee the activities of the chapter and assists in reaching out to potential partners, sponsors and event opportunities.


Professionally, Benoit works at Double Negative as a VFX Artist with a focus on animation. He has a passion for film making and creating audio-visual experiences. Benoit is originally from France and grew up in China, but is now based in London. Benoit was the instigator in founding the London chapter, and the original Chair.

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Ellen Erikson Secretary of the London ACM SIGGRAPH Chapter

As SECRETARY of the London ACM SIGGRAPH Chapter Ellen looks after the administration, public relations and social media campaigns.


Ellen’s expertise is in 3D animation, with a passion for character animation, acting and performance, along with a strong technical engineering background, and project management skills. Ellen began her professional career in Siemens producing technical animations. She later moved into Character Animation at Tinyisland Productions, where she eventually became an Animation Supervisor and Head of Department for Animation.


Ellen has a Bachelor’s Degree in Engineering, and Masters in Multimedia Design and Digital Media, along with a certificate in Advanced Character Animation from Animation Mentor. She also has extensive experience training and mentoring animation students, and professional animation teams during production.

Tom Feist-Wilson Treasurer of the London ACM SIGGRAPH Chapter

As TREASURER of London ACM SIGGRAPH Tom oversees the financial aspects of the Chapter.


Tom is a 3D generalist at Prime Focus Technologies where he works with corporate clients on bespoke projects. Tom has a BA (Hons) in Computer Arts from The University of Abertay Dundee. He began his career as a runner after moving from Scotland to London after graduation. Having worked his way up from ground level, Tom has now been working at Prime Focus for over 3 years. As one of the co-founders of the chapter, Tom has been part of the London ACM SIGGRAPH professional chapter from the beginning and helped to organize and run many successful events.

Bernhard Eiser Board Member of the London ACM SIGGRAPH Chapter

Bernhard is currently working in London as an Effects & Lighting TD. Bernhard graduated with first-class honours in Product Design from Middlesex University London. Bernhard also gained professional training through the ‘Advanced 3D for Visual Effects’ course at Escape Studios, London’s premier VFX training academy.

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Fiona Rivera Co-Founder & Board Member of the London ACM SIGGRAPH Chapter

Fiona is one of the co-founders of the chapter, and a CG researcher with a passion for making digital things move, and researching new technologies to make digital things move. She initially trained in 3D at Escape Studios, followed by Animation Mentor.  Fiona has practical experience throughout 3D pipeline, including experience as the supervising TD for an innovative immersive virtual environment system. Fiona has published research papers on virtual reality, and co-authored a book on Maya. She also holds a B.Sc. in Economics from the London School of Economics, plus a Computing B.Sc., and an M.Sc. in Multimedia and Virtual Environments from other institutions. Fiona is currently a member of the Multimedia and Vision Research Group, Queen Mary University of London.


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Iestyn Roberts Board Member of the London ACM SIGGRAPH Chapter

Iestyn is an animator in the TV department at Double Negative. A native Welshman from Snowdonia, North Wales, Iestyn went on to study 3D Character Animation at Animation Mentor way back in 2007. He has since worked as an Animator for Blue-Zoo Animation, Brown Bag Films and EGG over in Dublin, Ireland on both VFX Films and animated TV series.

Iestyn is also a keen photographer, specialising mostly in landscape and mountain photography. He is now branching out by taking photos for the London ACM SIGGRAPH Chapter events. See the event photos here

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Paddy Finn Board Member of the London ACM SIGGRAPH Chapter

Paddy is a Generalist TD at Double Negative. Originally from Liverpool, he has worked in a variety of roles on a wide range of projects, including feature films, episodic TV series, cinematic game trailers and TVCs. Paddy professional experience was gained at companies including Egg Post Production, Screen Scene VFX, Filmore VFX Amsterdam, and Blue Zoo Animation.

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Romain Joly Board Member of the London ACM SIGGRAPH Chapter

Romain helps to organise and run events for the chapter. He is a Generalist TD at Double Negative with over 8 years of experience in the TV & Film industry in France, Germany and England.


Romain was born in France where he initially received a degree in Computer Science. He then went on to graduate with a BA (Hons) in Creative Digital Media from Teeside University. Romain therefore has a strong grounding in both technical and artistic skills.

Sullivan Richard Co-Founder & Board Member of the London ACM SIGGRAPH

Sullivan is one of the co-founders and original Treasurer of the chapter from 2014-2016. He works as a Digital Matte Painter and Environment Artist at Oscar winning Double Negative VFX.

Sullivan has been involved in the production of many high profile feature films, such as Interstellar, Terminator Genisys, The Hunger Games: Mockingjay Part 2 and more.

Former Board Members

Thank you to the following wonderful people who have helped the London ACM SIGGRAPH Chapter before moving onto new things!

AJ Christensen

Benoit Leveau

Nicolas Rigaud

Youen Leclerc



If you are interested in helping out as a volunteer Board Member, let us know via our multiple channels or at an event!

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Sonja Geracsek Co-Founder and Former Secretary (2014-2016) of the London ACM SIGGRAPH Chapter

Sonja is one of the co-founders, and former secretary (2014-2016) of the chapter. In addition to regular chapter administration tasks, she also designed the majority of the chapter’s event posters during her time as secretary.


Professionally Sonja works as a Motion Graphics Designer with a focus on title design, flat graphic animation, and has a passion for branding. Her previous experience spans across various fields within the computer graphics industry such as games development, layout design and web development.


Sonja is originally from Slovakia and grew up in Germany. Sonja’s career has now taken her to Munich where she continues her activities in the Munich ACM SIGGRAPH Chapter. Sonja also keeps in regular contact to help out the London ACM SIGGRAPH Chapter when possible.

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Sean Rowe Co-Founder and Former Vice Chair (2015-2016) of the London ACM SIGGRAPH Chapter

Sean is one of the co-founders of the chapter. With over 6 years industry experience in both TV & Film, Sean has worked in various positions such as Matchmove/Layout, Motion Capture and Effects Technical Director. His main interests include Effects, Motion Graphics and technologies that present art in a new and exciting way like VR and Projection Mapping.

Sean has now moved onto projects out of the country, but we hope he will return to us again one day.

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Francois-Maxence Desplanques Co-Founder & Former Board Member of the London ACM SIGGRAPH Chapter

Francois-Maxence (known as FM), was one of our earliest Board Members (2014-2015), and was instrumental in establishing the chapter.


FM organised several of our initial events. These events helped to solidify us as a professional group capable of hosting high-profile events of interest to a wide-range of industry professionals. FM has moved on to projects in other places, but is welcome back any time!