Andrew ‘Billy’ Baxter takes 24hr Business Plan to London

February 18, 2026 10:47

From left: Nick Constantinou, Andrew Baxter and Guy Wieynk

Adland veteran Andrew “Billy” Baxter has launched his marketing consultancy, 24hr Business Plan, in London in a bid to grow its UK and European client base.

The Boomtown chairman has appointed UK-based advertising executives Guy Wieynk and Nick Constantinou to lead the local business coaching operation, joining the consultancy’s existing international presence in Singapore.

The consultancy specialises in offering business workshops with an aim of helping customers form 12-month roadmaps.

Baxter, who previously served as CEO of both Publicis and Ogilvy, first launched 24hr Business Plan five years ago, having left his role as a KPMG senior advisor seven months earlier.

The firm now operates in Sydney, Melbourne, and Brisbane, alongside its international offices, and was joined last year by former Unilever and Shazam executive Vijay Solanki as a senior advisor.

In a press release, Baxter said: “Our international expansion into London is in direct response to market demand and a growing roster of UK and European clients seeking access to the business’s innovative advisory approach.

“Guy and Nick collectively bring more than 45 years of experience in leading high-growth organisations to success. I am thrilled with the calibre of the UK founding team and the expertise they bring to the European market, and I am confident they will build something truly different in this region.”