Growth Strategy
Market entry, portfolio analysis, and revenue growth planning grounded in rigorous data and sector expertise.
Learn moreTop 50 Consultancy UK
Strategy That Moves Business Forward
Independent strategy and management consultancy working with FTSE 350 boards and PE-backed businesses to drive measurable growth and lasting transformation.
£2.1bnValue Created
180+Engagements
94%Client Retention
£2.1bn
Value Created
Engagements180+
Client Retention94%
£2.4BClient Revenue Impacted
Across all engagements
140+Engagements Delivered
Since 2011
87%Client Repeat Rate
Return for a second project
30+PE Firms Served
Portfolio-ready experience
Our Capabilities
End-to-end advisory across strategy, operations, and transactions.
Operational Transformation
Cost reduction, process re-engineering, and technology-enabled transformation programmes alongside your team.
Learn moreM&A Advisory
Commercial due diligence, synergy assessment, and post-merger integration for buyers, sellers, and management teams.
Learn moreDigital & Technology
Digital strategy, technology selection, and transformation programme leadership bridging boardroom ambition and delivery.
Learn moreInterim Management
Experienced interim Directors available at short notice for CRO, CMO, and COO roles while you recruit the permanent hire.
Learn morePrivate Equity Support
100-day plans, value creation programmes, and portfolio reviews for PE sponsors and management teams.
Learn more“
What Our Clients Say
Trusted by FTSE 350 boards and high-growth businesses alike
“Summit worked with us through a complex three-market expansion. Their strategic clarity and ability to align our leadership team was remarkable. We exceeded target by 23% in year one.”
JC
Jonathan Carr
FTSE 250 Client · CEO, Meridian Retail Group plc
“We've used Summit across five portfolio companies now. Their commercial due diligence is consistently thorough and their interim managers hit the ground running. A genuinely valuable partner.”
CF
Claire Forsyth
Private Equity Client · Managing Partner, Ardent Capital
Reviews 1–2 of 3
13+
Years Experience
About Us
Independent. Opinionated. Effective.
Summit Advisory Group was founded in 2011 by former McKinsey and BCG partners who wanted to build a different kind of consultancy — smaller teams, deeper engagement, more accountability. We work with ambitious management teams, private equity sponsors, and boards navigating complexity: growth strategy, operational transformation, M&A integration, and interim leadership. We've delivered 140+ engagements across 14 sectors and our partners have personally held the C-suite roles they advise on.
- Former McKinsey & BCG founding team
- Small teams, senior-led throughout
- Outcome fees available on project work
- Embedded delivery — not just a report
Get In Touch
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