The firm was set up in early 2008 by former Ketchum corporate and consumer MD Jessica Bondy.
Other winners at the event, which took place at The Artillery Garden, London, on 7 July, included Blue Rubicon as Outstanding PR Consultancy.
Macmillan Cancer Support and Limelight Public Relations in conjunction with McCann Erickson each picked up two awards.
Macmillan Cancer Support won the Public Affairs and Not-for-Profit categories for its 'Prescription charges campaign'.
Limelight PR, with McCann Erickson, took home the Healthcare and Integrated Campaigns awards for their 'ComputerTan' campaign.
The award for Outstanding In-House Public Relations team went to the London Borough of Camden.
'From more than 900 entries and 145 finalists emerge 26 winners,' said CIPR president Kevin Taylor. 'This goes to show what a remarkable achievement it is to win one of our CIPR Excellence Awards.'