Caroline Bannock is acting head of community at the Guardian, working with the community and moderation teams on reader engagement and participatory journalism. Prior to this Caroline was UGC social and community editor, looking after GuardianWitness https://witness.theguardian.com/, the Guardian’s open journalism platform, where readers from around the world submit videos, images and stories directly to Guardian journalists. Started in March 2013, GuardianWitness has already won numerous awards, including British Journalism Innovation of the Year. Previously Caroline was a senior news producer and acting foreign editor at Channel 4 News. She has worked on documentaries for Channel 4 and the BBC.