The inaugural Social Buzz Top 50 celebrates the top 50 people in UK social media marketing.
Prior to Twitter, Daisley was director of YouTube and display at Google, where he was responsible for leading the UK sales for YouTube and Google's online display advertising.
In this role he successfully monetised Google's display business in the UK, with the company rising to be number two in the display market.
He joined Twitter as sales director in 2012 and was promoted to managing director in 2013.