ABOUT
US
The Seize Group is a dynamic collective of innovative businesses, each driven by a commitment to excellence, sustainability, and forward-thinking solutions. As the parent company of Seize Group Management, Seize Blackwell Developments, and Seize Marine, we operate across diverse industries including property management, sustainable property development, and marine consultancy. Our expertise lies in delivering tailored, high-quality services that create lasting value for our clients, partners, and communities.
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With a focus on innovation and adaptability, The Seize Group is dedicated to pioneering solutions that drive long-term success. Whether supporting tenants and landlords, creating sustainable developments, or consulting on luxury marine projects, we take pride in shaping industries and redefining excellence.
Our mission is to empower businesses and individuals by offering strategic, high-quality solutions across multiple sectors. Our core values define who we are:
INNOVATION– We challenge the status quo and embrace cutting-edge solutions.
SUSTAINABILITY – We prioritize environmentally responsible practices in all our ventures.
EXCELLENCE – We are committed to delivering the highest standards in every project.
INTEGRITY– We build trust through transparency, reliability, and ethical business practices.
COLLABORATION– We believe in the power of partnerships to drive success.
OUR TEAM
Our founders understand the challenges life brings. Having developed several business and property whilst still maintaining a family life balance, they all too well know the importance of hassle free property. Putting their passions for tech driven approaches and marketing knowhow into practice they have a strong vision and purpose; to help others increase time and income, so that they too can find that all important life balance.
Sam Usher
MANAGING DIRECTOR
Sam has spent years working in the leisure and events sector, managing national and international hospitality events for multinational companies, with clients including ICI, Gulf Agency Company, Esso, and BP. His ability to coordinate and deliver complex projects, ranging from intimate gatherings to large-scale events for up to 2,500 attendees, showcases his project management expertise. During a consultancy project for the Crown Prince of Bahrain’s Court, Sam reignited his passion for property development, leading him to expand his focus beyond marine consultancy.
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Growing up around his father’s property business, Sam had a natural inclination towards real estate. He managed renovations of commercial properties into high-quality student accommodation, overseeing developments ranging from 30-bed to 70-bed blocks. His experience also extends to the tech and data network sector, where he supported the specification and installation of complex systems in hotels, hospitals, universities, and city-wide infrastructure projects.
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Recognizing firsthand the gaps in service quality experienced by property owners and guests, Sam co-founded Seize Group with Diana McMann. Their shared passion for customer-focused property management, combined with cutting-edge technology and strategic digital marketing, has enabled Seize Group to offer forward-thinking solutions across multiple industries.
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Beyond the property sector, Sam has over 25 years of experience in the marine industry, which has led to the formation of Seize Marine, under the umbrella of The Seize Group. Sam brings a wealth of expertise and passion to Seize Marine. A qualified watersports instructor and inspector, Sam's deep understanding of the sector has positioned him as a trusted authority in marine consultancy. His knowledge of personal watercraft, safety regulations, and luxury marine services forms the foundation of Seize Marine, ensuring clients receive top-tier guidance and solutions.
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Diana McMann
MARKETING & CUSTOMER EXPERIENCE DIRECTOR
After receiving a BA (Hons) in Marketing Management, Diana started her career in the Advertising world with the globally recognised J Walter Thompson Group.
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Diana then moved into Retail Sales with global frozen food brand, McCain Foods. This took her to managing, marketing and implementing product ranges for portfolios of national clients. Diana moved out of the corporate world after starting a family and established her now multi-award winning luxury Bridal Business. In it's 10th year, Diana has grown the business into a nationally recognised brand, which is known for its impeccable five star customer service, strong brand identity and it's commitment to sustainability.​
Diana has since followed her passion for business growth and marketing by establishing a mentoring company for business owners, helping them to scale by building and creating engaging customer experience, marketing and social media strategies.
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A founding partner at The Seize Group, Diana brings a creative flair to the business by driving forward customer first marketing with a passion for luxury, first class experiences.
If you are interested in discussing how we can work together then we'd love to hear from you.