Malcolm Stewart
Summary
Commercial marine leader with a proven track record of building and leading high-performing teams, delivering sustained profitable growth, and managing complex global risks within the UK insurance market. Driven by a genuine passion for the marine sector and a commitment to excellence, consistently delivers outstanding retention, innovative product solutions, and strategic growth.
A highly motivated and influential leader, recognised for creating strong, loyal teams that are aligned, accountable, and driven to succeed. Well-connected across the marine industry, with a reputation for building trusted relationships and delivering long-term commercial value through both people and performance.
Overview
21
21
years of professional experience
4002
4002
years of post-secondary education
Work history
Head of Commercial
Haven Knox Johnson Commercial (Howden)
2024.07 - 2026.03
- Leads and influences a national UK Marine Broking team, driving strategic growth, operational performance, and market positioning across the division. Plays a key role in supporting the wider group on complex global risk acquisition, contributing to cross-market client wins and delivering tailored broking solutions.
- In 2024, designed and launched a bespoke commercial wording, taking it from concept through to market delivery. Has delivered exceptional portfolio performance, achieving a 2% loss ratio and 92% retention across all managed offices, alongside 9% year-on-year growth across the wider commercial book.
- Manages a personal portfolio of £2.3m GWP with 98% retention and is currently developing a Personal Accident policy for the racing yacht sector. Utilises Power BI and internal systems to support data-driven strategic decision-making.
Branch Manager
Canopius UK Specialty / A-Plan / Howden
2013.07 - 2024.07
- Established and scaled a commercial marine team from inception, building a high-performing, cohesive culture with a strong focus on accountability and results. Grew the business to a £9m GWP book, including the successful integration of an acquired portfolio, while maintaining full P&L responsibility.
- Delivered 91% retention and sustained double-digit growth year on year, alongside increasing personal income contribution by approximately £100,000 annually. Maintained strong audit performance and consistent financial outcomes across multiple ownership structures.
Account Executive
Fastnet
2012.10 - 2013.07
- Managed a portfolio of commercial marine clients, ensuring strong renewal performance, client satisfaction, and retention.
Account Executive
Towergate Mardon
2008.11 - 2012.10
- Built a commercial marine client base from scratch, achieving approximately 90% retention while developing a strong and sustainable sales approach.
Account Executive
Handler – Perkins Slade
2005.09 - 2008.11
- Developed core broking and client management expertise, building a marine portfolio that led to promotion.
Education
Dip CII - in progress
Master of Arts - European Law
University of Portsmouth & Hague Hogeschool
Bachelor of Arts - Politics
University of Portsmouth
Skills
- Strategic leadership & team development
- Commercial growth & portfolio expansion
- High-value client acquisition & retention
- Product innovation & market development
- Marine insurance & risk expertise
- Strong industry network and influence
Affiliations
- Non-Executive Director – British Marine
- Non-Executive Director – National Boat Show
- Fundraiser – Andrew Simpson Foundation
- Fundraiser – Ellen MacArthur Cancer Trust
Accomplishments
- 3rd University Yachting world cup – 2000 (University of Portsmouth) - Awarded Colours
- Scottish Commodores Cup team (2nd) (2000)
- English Commodores Cup team (2002)
- Winner Cowes week in class (2017)
- Ex professional sailor - Winner of European and National Championships - 1998 -2005.
Timeline
Head of Commercial
Haven Knox Johnson Commercial (Howden)
2024.07 - 2026.03
Branch Manager
Canopius UK Specialty / A-Plan / Howden
2013.07 - 2024.07
Account Executive
Fastnet
2012.10 - 2013.07
Account Executive
Towergate Mardon
2008.11 - 2012.10
Account Executive
Handler – Perkins Slade
2005.09 - 2008.11
Dip CII - in progress
Master of Arts - European Law
University of Portsmouth & Hague Hogeschool
Bachelor of Arts - Politics
University of Portsmouth