No boxes. No barriers. No labels.

We work with organisations where performance matters, pressure is real and the human cost can no longer be ignored. That is where most organisational challenges actually live, and where we do our best work.

Work with Vanessa Read our story

Vanessa Belleau, founder of High Fifteen, smiling in a black and white portrait with a pink frame

Founded2019, London. Working across Europe & the US

Clients100+ companies, from luxury to charities

Reach30,000+ employees and senior leaders

Our story

Turning challenges into opportunities, silos into synergy.

In 2019, amid shifting workplace paradigms and growing complexity, Vanessa Belleau, a seasoned brand strategist, executive coach and former Consultancy EMEA Director at WGSN, set out to redefine how organisations align culture with strategy and creativity.

Her mission was clear: help leaders and teams focus on what matters by turning bold ideas into measurable results.

Today we help leaders and teams perform well in complex conditions without burnout, blame or breakdown, by strengthening decision-making, leadership confidence and the quality of the everyday conversations that drive results.

Discover how we can help

Meet our founder

Vanessa Belleau

Founder, executive coach, speaker (she/her)

Vanessa’s career spans two decades at the intersection of strategic business insight, executive coaching and cultural transformation. She combines sharp strategic thinking with a deep understanding of human behaviour to inspire meaningful change.

Her work spans corporates, scale-ups, charities and creative organisations, where she has helped leaders stabilise performance, rebuild trust and lead with clarity in demanding environments. Clients value her calm authority, direct style and ability to work with complexity without over-simplifying it.

Vanessa is known for her ability to

Name what others avoid
Create psychological safety without lowering standards
Balance emotional intelligence with commercial reality
Help leaders perform without self-sacrifice

Accolades & achievements

Credentials that hold up in the boardroom.

Her expertise has been sought by global brands like LVMH, Sony Music, Nike, Levi’s and Gymshark, integrating emotional intelligence, strengths-based leadership and actionable workplace insight.

EducationMSc in European Business Administration and MA in Business Management, Burgundy School of Business
PsychometricsAccredited Master Practitioner of Strengthscope®, positive psychology psychometrics
Emotional intelligenceCertified Practitioner of EQ-i 2.0 and EQ 360
PreviouslyConsultancy EMEA Director at WGSN, brand and comms research, cultural and societal trend forecasting
SpeakingTEDxBeckenham, keynotes, podcasts and panels on culture, positive psychology and emotional intelligence
ArtFeatured artist at the Royal Watercolour Society Open

Our philosophy

Bold expertise + action + compassion = results.

Inclusive, human-centred workplaces are not a box to tick. They are essential for sustainable success.

01 · Bespoke

Root causes, not templates

Distinctive, tailored solutions that tackle what is really going on, turning complexity into clarity and challenges into results.

02 · Progressive

0 to 1, 1 to 2, 2 to 3

Our signature framework scales transformation step by step, improving retention, engagement and collaboration without overwhelm.

03 · Human

Transformation begins with people

Built on trust, inclusivity and co-creation. From executive coaching to cultural audits, we unlock human potential.

What clients gain

They come when something important is at risk.

Clients don’t come to us for theory or generic leadership development. Here is what working together typically changes.

Working with us leads to

Faster, clearer decision-making
Leaders who trust their judgement and hold boundaries
Earlier, more constructive conversations before issues get costly
Sustainable performance, without exhaustion as the norm

In practical terms

Fewer delayed initiatives
Stronger leadership presence at senior levels
Better retention of high-potential people
Teams moving from polite dysfunction to real collaboration

+90^%

of leaders report increased confidence and clarity in their role.

8 in 10

rate our insights as immediately applicable to their day-to-day work.

+85^%

say we enabled more open and constructive conversations in their teams.

Based on post-engagement feedback across coaching, workshops and leadership programmes.

Since 2019

How it all began, and how it’s going.

2019

High Fifteen Ltd is born

Vanessa blends brand and comms research, cultural and societal trend forecasting and executive coaching to help organisations navigate change with creativity and strategic foresight. Early clients include Levi’s, LVMH Fashion Group, LOEWE and The Walt Disney Company.

2020

A human-centred approach to high performance

A new global client retains High Fifteen as its inclusive high performance consultant. Services expand into tailored learning and development, so employees really connect, feel seen and work with inclusion in mind.

2021–22

Global brands, small businesses, charities

Partnerships with Nestlé, Sony Music, LVMH Beauty, Louis Vuitton, Dover Street Market, CBRE, Samsung, TALA and adidas, alongside small businesses like Better Nature and charities like WWF and Cancer Research. The ‘0 to 1, 1 to 2, 2 to 3’ framework launches.

Today

A trusted voice in cultural transformation

Clients extend their partnerships into executive coaching and beyond, while Vanessa’s thought leadership reaches new audiences through keynotes, podcasts, panels and the TEDx stage.

Trusted by organisations navigating growth and change

100+ companies. One philosophy.

From luxury fashion and beauty to real estate, by way of charities and tech scale-ups.

Vanessa on the TEDxBeckenham stage beside one of her colourful paintings

A personal touch

The artist in the room.

Vanessa is also the soulful creative behind Beautiful Water Studio, where she paints emotions into vibrant, story-rich pieces that explore identity, resilience and joy, with her sassy dog, Purple, as head critic.

That creativity is not a side note. It is why sessions feel alive, why people remember them, and why leaders leave with ideas they actually use.

See Vanessa’s artwork Watch the TEDx talk

Ready to make a difference?

Let’s build a workplace that’s inclusive, innovative and future-ready.

High Fifteen turns friction into collaboration, silos into synergy and bold ideas into measurable results.

Start the conversation Take the Pressure Check