Teresa Allan
Turning commercial ambition into strategic clarity and making sure teams can sustain the growth that follows.
About Teresa
Teresa Allan is a visionary founder and senior commercial leader who has built Magnus Consulting to close the gap between marketing ambition and commercial impact. She has led the consultancy through five consecutive years of double-digit growth, creating a B Corp certified business that combines commercial excellence, behaviour change and AI expertise to help organisations sharpen strategy, improve performance and deliver measurable results.
Recognised by the Financial Times as one of the UK's Best Management Consultancies in 2025 and 2026, Teresa is known for building a culture of elite talent, moving quickly on new innovation including AI, and bringing clarity, pace and strategic challenge to leadership teams. She has a strong focus on turning insight into action and creating marketing that makes a real business difference.
Featuring Teresa
The Architecture Gap Behind Every Missed Growth Target
Magnus's GTM Confidence Index FY26 found ambition running well ahead of belief. Teresa Allan reports from the Horizon Summit on why the gap is architecture, not budget.
Don't Lose the Customers You Already Have: Protecting Trust Through Integration
Loyal customers don't experience an acquisition as a milestone, they experience it as uncertainty. Why protecting the existing base is the cheapest, fastest growth lever after a deal.
One Engine, Not Two: Building a Unified Go-to-Market After the Deal
Two go-to-market engines running side by side is where most acquisitions lose momentum. What a truly unified motion requires, and who has to own it.
