It was organised by vlogger Tom Burns and YouTube musician Dave Bullas, with the support of Liam Dryden and Jazza John.

[7] In its first three years, the event followed the pattern of meeting in parks by day, and moving to a London venue such as The Luminaire for live music performances in the evening.

[8] Following the rapid growth of the event, the decision was made to hold the fourth Summer in the City at a dedicated venue for its duration; SitC 2012 took place at The Brewery in London from 17 to 19 August.

[9] The number of prospective attendees at SitC 2012 exceeded the 1,000-person capacity of the venue, inspiring the need to move away from being a free event and introduce ticketing in following years.

Backlash over the announcement that the event would now charge admission before confirming the venue, dates or line-up of featured creators resulted in the cut of early ticket prices to £10 plus VAT.

[15] Continuing issues with the demand for SitC's meet & greets in 2014 inspired the development of an online ballot system, that has since been implemented in following events.

[18] SitC 2015 hosted the presentation of several YouTube Play Button awards to creators who had recently hit milestones of 100,000 or 1 million subscribers on their channels,[19] and NME stated that vlogging has become big business.