Co-located with Technology for Marketing

23 - 24 September 2026
Excel London

23 - 24 September 2026
Excel London

Conference programme 2026

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Your best channel is your worst investment

24 Sept 2026
The Next Era of Marketing Stage
Growth Marketing & Performance Marketing Effectiveness & ROI eCommerce Growth & Strategy Conversion & Revenue Growth Commercial Strategy for Marketers
Your best channel is your worst investment

For eCommerce and performance marketing leaders that want to stop allocating budget against an inherited ROAS target and start deciding where the next pound of spend should actually go. The channel with your strongest ROAS is usually your most saturated one – and the figure that makes it look good is the same figure hiding the fact that it has stopped growing. This session replaces average ROAS with a single, forward-looking number, shows you how to calculate the break-even your own P&L needs rather than the target you inherited, and gives you a three-week test you can run on your biggest channel using data you already have. You’ll leave able to name the point at which each of your channels stops delivering incremental growth, and which one should take the next marketing pound.

What you can expect to takeaway:

  • Your true break-even ROAS.
  •  A three-week test to establish whether your biggest channel is saturated, with no data science team required.
  • Findings from original research across ten advertisers on how far a last-click view can understate a channel’s real contribution.
Speakers
Tom Katté, UK CEO - Precis

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