Kas Sinclair

Growth Specialist

Growth starts
with delivering value

I help agencies and their clients grow together by understanding client needs, creating meaningful value throughout the client-agency journey, and turning that value into stronger commercial outcomes for both the client and the agency.

Growth Opportunities
Across The Client-Agency Journey

WIN

10%

of annual revenue growth should come from new customers.

RETAIN

40-95%

potential profit increase from a 5% increase in retention.

COLLABORATE

+30%

better agency output when clients and agencies work effectively together.

GROW

50%

more likely to try new products, with 31% more spent by existing customers.

I bring together the right expertise to shape solutions around genuine client needs, build the case for investment and lead multidisciplinary teams towards the intended outcomes. By demonstrating the value added, I strengthen the partnership and create the foundation for further growth.

Convert Value into Mutual Growth

Turn opportunities to create value into growth by bringing together the right expertise, shaping and delivering the right solutions, and ensuring they create measurable value for both client and agency.

My Growth Principles

To create client value and sustainable growth throughout the client agency journey, I follow four guiding principles.

I bring together client, relationship, delivery and commercial intelligence to understand where the client is today, where they are going and how well the agency supports them. I use this understanding to identify where existing or additional agency offerings could create greater value.

Assess Where to Add Value

Build a clear understanding of the client, their priorities and the existing agency relationship, then assess which agency offerings are most relevant and where they can add the most value.

I create a regular rhythm of engagement beyond day-to-day delivery through 1:1s, business reviews, roadmap planning, innovation sessions, and proactive recommendations. This builds trusted relationships, demonstrates ongoing value and opens up broader conversations about where we can help next.

Build the Conditions for Growth

Build strong client engagement through regular strategic conversations, planning and proactive ideas that demonstrate value, deepen trust and create the conditions for growth.

I have turned successful account growth behaviours into frameworks, playbooks, processes and technology that teams can consistently apply. I connect client intelligence, relationship health, commercial performance and growth planning so opportunities can be identified, prioritised and acted on strategically.

Systemise and Scale Growth

Embed proven frameworks, playbooks, data and technology into how accounts are developed, making growth structured, measurable and repeatable across the agency rather than dependent on individual account leaders.

Hover over each to see more details:

My Experience

17+

years growing complex client relationships across a number of industries.

markets served across Europe and North America.

40+

tier 1 accounts over 4 years won and developed through strategic agency programme.

£7M+

annual portfolio revenue under management.

My Portfolio

I've had the opportunity to work with leading global clients across technology, retail, financial services, FMCG, automotive, media and beyond. Here's a snapshot of some of the clients: