Compiled by Best Companies, the name behind The Sunday Times 100 Best Companies to Work For list, the latest survey quizzed 37,500 employees across 567 small businesses.
Based on staff feedback and looking to acknowledge excellence in the workplace, companies are surveyed on a number of workplace factors, including wellbeing, leadership and personal growth.
Shine, which came sixth last year, was among only three PR firms to make the top 50, alongside Bite Communications and Brands2Life, which reached 45th and 48th position respectively.
Blue Rubicon, GolinHarris, The Red Consultancy, Lexis and Consolidated PR were the other PR firms that made the top 100.
Of the eight PR firms that made the 2011 list, Shine was the only agency to improve on last year's results.
Scooping the highest placement for a communications agency, Shine founder Rachel Bell said: ‘Our people are at the heart of our business so this particular award is one that is very close to my heart. Staff cited the training they receive and opportunities to develop and learn as one of their top reasons for loving Shine; having founded the business on the basis of putting people first, this has personally delighted me.’
Shine was the placed first in the country on a number of individual measures, including training (88.4% of staff saying that the company’s training was of great benefit) and encouraging staff to fulfil their potential (91.1%).
Lexis PR, which finished 71 overall, became the only firm to make the top 100 every year since it started.
Bite Communications also picked up a special award for best training and development.