Helen O'Reilly | Colliers International | London - West End

Helen O'Reilly

UK Head of Marketing and Digital

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Professional Summary

As UK Head of Marketing and Digital Helen is responsible for building a marketing strategy that grows brand awareness; drives lead generation; works across business lines to help influence customer experience and ultimately helps us meet our growth and revenue targets.   

Previously, Helen led the Digital team in the UK & EMEA from May 2017 and prior to that she was Head of Marketing and PR for Colliers in Ireland.

Helen studied at University College Cork where she has a bachelor degree in Law and French, and at Dublin Business School where she has a diploma in Marketing and Event Management.

Having worked in Marketing and PR across various industries including the Motor Industry with brands such as BMW, Mini, Citroen and Hyundai as well as leading the marketing for Ireland’s most prestigious theatre, the Gate Theatre Helen has a passion for creative digital marketing strategies. Prior to this, Helen worked as a Production Manager for Independent TV production companies for over 5 years, at which time she managed the web and social media platforms for several TV shows, and produced spin on online shows to compliment TV broadcasts. Helen also has experience in managing and coordinating large scale events including awards shows, pop-up events, launches and small festivals.




Helen created and implemented local marketing and PR campaigns for brands BMW, MINI, Citroen and Hyundai in South East of Ireland, in line with corporate identity guidelines and national campaigns, while activiating these brands through tactical sponsorship opportunities  including roadshows, local business partnerships and events. 

While working as a Production Manager with Straywave Media, Helen was part of the team that created the first smart phone app to accompany a TV show.  Playing an integral role in developing and producing new TV show formats for Irish Broadcastt, she also created and implemented a digital cross-over strategy for TV shows to encompass online content on the Broadcasters player/websites, social media platforms and the show smartphone apps.

At the Gate Theatre, Helen led ta digitral treansformationw hcih saw the theatre embrace social media for audience engagement and grew Facebook users by 6000, Twitter by 5000+ new users and created an Instagram account that reached 1000 users over 6 months, byimplementing the creation of video promos for all shows.


  • BCL Law and French  - University College Cork
  • Post Graduate Diploma Marketing and Event Management – Dublin Business School
  • Masters Drama and Theatre Studies – University College Cork

Memberships & Involvements

Helen is a board member of UK PropTech Association





'Helen is a highly dedicated and creative marketer. Her work was never anything short of exemplary. Helen was a pleasure to work with as part of a team, and also often was the driver in introducing new initiatives and digital technologies, which greatly contributed to the company's online success.'

Derek Kelly | Gate Theatre


Service Lines
Marketing & Communications
Property Type

My Team

Featured News
10 Dec 2019
UK PropTech Association appoints Colliers International’s Helen O’Reilly to board
Helen O’Reilly, UK head of marketing and digital at Colliers International, has been appointed to the board of the UK PropTech Association.
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