About Us | Meridian Advisory Group

Who We Are

Established practice. Independent perspective.

Meridian Advisory Group was founded in 2012 with a clear purpose: to provide senior leaders and growing organisations with the kind of honest, informed advisory support that is often difficult to find inside a large consultancy or professional services firm.

We are a deliberately compact practice. We do not subcontract work or deploy junior staff on engagements sold by senior advisers. Every client works directly with an experienced practitioner for the full duration of their engagement.

Our work spans leadership mentoring, organisational strategy, board advisory, and capability development. We work across the private, public, and not-for-profit sectors, and we have particular depth in financial services, professional services, and infrastructure.

We are registered in England and Wales and operate in full compliance with professional standards frameworks including those of the CIPD and the European Mentoring and Coaching Council.

Our Principles

How We Work

Our practice is guided by a small number of commitments that shape everything we do — from how we conduct initial conversations to how we measure success.

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Intellectual Honesty

We tell clients what we genuinely believe, not what they might prefer to hear. Advisory relationships built on candour produce more durable outcomes than those built on affirmation.

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Methodological Rigour

Our recommendations are grounded in evidence, structured analysis, and contextual judgement. We do not apply standard templates where bespoke thinking is required.

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Professional Discretion

The trust our clients place in us is treated with the utmost care. We maintain strict confidentiality and never discuss client engagements outside our firm.

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Proportionate Counsel

Not every challenge requires an extensive engagement. We structure our involvement to match the nature and scale of the situation — and we are transparent about this from the outset.

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Long-Term Perspective

We measure the value of our work by results over time, not by the volume of output we generate. We prefer fewer, more meaningful engagements to a high-volume practice.

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Continuous Development

Our practitioners maintain active CPD programmes and engage regularly with academic and practitioner research, ensuring our thinking remains current and well-founded.

Our Founder

Dr. Eleanor Marsh

Founding Director & Senior Adviser

Eleanor founded Meridian Advisory Group following a seventeen-year career in senior management consulting and executive education. She holds a doctorate in Organisational Behaviour from the London School of Economics and has published research on leadership transitions and organisational resilience.

She works directly with a small number of clients at any one time, ensuring that each engagement receives her full professional attention. Her advisory work spans board-level mentoring, strategic planning support, and leadership capability review for organisations undergoing significant change.

Eleanor is a Chartered Fellow of the CIPD, an accredited mentor with the European Mentoring and Coaching Council, and a visiting fellow at a UK business school. She is a regular contributor to professional publications on leadership, strategy, and organisational development.

DPhil, LSE CFCIPD EMCC Senior Practitioner FIoD Visiting Fellow

Our History

How We Got Here

A practice built gradually, on the strength of results and the trust of clients.

2012

Founded

Meridian Advisory Group established in London as a sole-adviser mentoring practice.

2015

Team Expansion

First associate adviser appointed; practice scope extended to include board-level strategic consulting.

2018

Corporate Programmes

Launch of structured in-organisation leadership programmes for FTSE-listed clients.

2021

Virtual Practice

Full virtual delivery capability introduced, extending reach to clients across the UK, Europe, and beyond.

2024

Research Programme

Formal research collaboration established with a UK university business school.

2026

Today

Four resident advisers, 280+ clients served, and an ongoing commitment to independent, high-quality practice.

About Meridian Advisory Group