This year's competition reached record levels of participation, with over 500 registered poster delegates, 3186 contributors, 9759 tweets, and an audience of over 2 million.
Two winners received prizes in each of 12 subject categories, while Zoë Ayres from Hach received the audience participation prize for the most retweets. Her poster highlighted the mental health difficulties that some people experience while completing a PhD, and offering tips and advice. It was retweeted over 1,700 times.
Lizzie Ashton from Loughborough University received a special commendation for her eye-catching poster on high energy density hydrogen storage.
The subject category prize winners were as follows. Click on the links to see the posters.