The Progress 1,000 contains names from across the worlds of sports, fashion, politics and beyond - with marcoms entrants classified as "spinners and marketers".
These include well-known figures such as Ed Williams, the UK CEO of Edelman who used to head comms at the BBC; Bell Pottinger boss James Henderson; and Roland Rudd, the chair of Finsbury who is also at the helm of a pro-EU campaign.
The Queen's comms secretary James Roscoe and comms director for the Royal Household Sally Osman, make the list along with Outside Organisation CEO Alan Edwards.
Former Prince Charles and Manchester United comms chief Paddy Harverson and Google PR boss DJ Collins, who are co-founders of Milltown Partners, also rank among the most influential in the industry.
The full list of "spinners and marketers" in alphabetical order, are:
- Lord Black - executive director, Telegraph Media Group
- Karen Blackett - chief executive, MediaCom
- Mark Bolland - founder, Mark Bolland PR
- Erica Bolton - director, Bolton & Quinn
- DJ Collins & Paddy Harverson - co-founders, Milltown Partners
- Carolyn Dailey - founder, The Dailey Partnership
- Alan Edwards - CEO, Outside Organisation
- Mark Gallagher - founder, Pagefield
- Camilla Harrison - CEO, Anomaly
- Sir John Hegarty - co-founder, BBH
- James Henderson - CEO, Bell Pottinger
- Johnny Hornby - founder, The&Partnership
- Anji Hunter - senior adviser, Edelman
- Jason Knauf - comms secretary to the Duke and Duchess of Cambridge
- Kristina Kyriacou - comms secretary to the Prince of Wales
- Lord Mandelson - co-founder, Global Counsel
- James Murphy - chief executive, Adam & Eve DDB
- Sally Osman - director of communications for the Royal Household
- Sir Alan Parker - founder, Brunswick
- Neil Reading - founder, Neil Reading PR
- James Roscoe - communications secretary to the Queen
- Roland Rudd - chairman, RLM Finsbury
- Ann Scott - founder, Ann Scott Associates
- Cilla Snowball - group CEO, BBDO
- Ed Williams - CEO, Edelman UK