More than 700 brands from 23 industries were included in Social Brands 100 this year, more than twice that of 2012, when the winner was Innocent.
Brands from 16 industries appear on the list with charity, travel, FMCG, and publishing and media the most represented after retail – the same five industries that led the shortlist last year.
The final ranking and report will be published on Thursday, 23 May at an event in London.
Other brands that have made the shortlist, which benchmarked social media behaviour and engagement, include Absolut, ASOS, Audi UK, B&Q, Barclays UK and Barclaycard.
Cadbury UK, which had a standout social media London 2012, is there too, as are Classic FM, Dorothy Perkins and EasyJet.
EDF Energy, which also did well during London 2012, is shortlisted, along with Heathrow Airport and Innocent, which continues to perform very well in social media and remains a highly engaged brand.
There is a strong showing from charities and those shortlisted include Amnesty International, British Heart Foundation, National Trust, Teenage Cancer Trust and WWF.
Now in its third year, the Social Brands 100 was created by social specialist agency Headstream and benchmarks brand behaviour in social media, identifying industry leaders and providing an annual snapshot of social media’s evolution.
Steve Sponder, managing director of Headstream, said that the growth in social media reflected the increased levels of competition in this year's Social Brands 100, as more companies realise that the key to success in social media is engaging with people in a transparent, authentic and compelling way.
He said: "Displaying this kind of ‘social brand behaviour’ is still easier said than done for many, so it’s important to acknowledge those leading the way."
Headstream partnered with social media analytics provider Socialbakers to conduct this year’s research and looked at each brand’s engagement with communities on Facebook, Twitter and YouTube.
Headstream also surveyed a cross-section of brands involved in the research to identify trends in social media. The findings from both sets of data will be combined into the report, which will be published on 23 May and will include industry-specific rankings and insights.
User management platform Janrain is a Social Brands 100 sponsor and The Wall and Brand Republic are exclusive media partners.
Further information can be found and the methodology is available .