At a Glance
- Tasks: Lead the growth of a premium blood testing and personalised supplements platform.
- Company: Join Third Space, a trusted brand in health and wellbeing.
- Benefits: Competitive salary, dynamic work environment, and opportunities for professional growth.
- Other info: Be part of a high-performing team driving innovation in health and wellness.
- Why this job: Make a real impact in health optimisation and personalised nutrition.
- Qualifications: Experience in consumer health, ecommerce, and strong leadership skills required.
The predicted salary is between 80000 - 100000 € per year.
We are seeking an experienced, commercially minded Head of Supplements to build and scale a premium blood testing and personalised supplements platform at Third Space. This is a senior, end‐to‐end role with full ownership of a strategically important growth pillar, combining blood diagnostics, nutritionist‐led interpretation and personalised supplement subscriptions. The role will take the business from concept through to scaled, profitable operation, leveraging Third Space's trusted brand, affluent member base and deep credibility in performance, recovery and wellbeing. The opportunity is significant: research highlights strong latent demand and this role will be accountable for realising that potential.
Key Responsibilities
- Commercial Leadership & P&L Ownership
- Own full P&L responsibility for the supplements and blood testing business, including revenue growth, gross margin, cost control and EBITDA delivery.
- Define and execute the commercial strategy across supplements, blood testing, nutrition coaching and subscriptions.
- Build a subscription‐first revenue model, optimising pricing, bundles and retention to drive lifetime value.
- Set and manage pricing architecture across blood testing packages, consultations and personalised supplement stacks.
- Identify and unlock incremental revenue opportunities, including add‐on products, expanded ranges and adjacent health categories.
- Product & Proposition Development
- Lead the development of a tiered personalised health ecosystem, combining health‐goal‐based supplement recommendations, optional but differentiated blood testing via trusted lab partners, and nutritionist‐led interpretation and clear, prioritised guidance.
- Ensure all products and protocols are evidence‐based, credible and transparent.
- Own the core supplement range strategy, initially focused on high‐trust, high‐demand categories (e.g. protein, creatine, electrolytes, multivitamins, omega‐3, magnesium, vitamin D, iron).
- Decide where Third Space‐branded products versus selected third‐party products make most commercial and operational sense.
- Work closely with marketing and nutrition teams to ensure the proposition remains expert‐led and outcomes‐driven.
- Customer Journey & Experience
- Design and optimise the end‐to‐end customer journey, from health goals and lifestyle data capture through to fulfilment and ongoing re‐testing.
- Ensure blood test results and supplement recommendations are explained in clear, plain language, with prioritised actions members can trust.
- Embed outcome‐driven retesting (e.g. at 3–6 months) to demonstrate progress and drive subscription retention.
- Deliver a seamless experience across digital, in‐club and nutritionist touchpoints.
- Supply Chain, Operations & Compliance
- Own supplier strategy, including sourcing, negotiation and performance management across supplements, labs and logistics partners.
- Oversee manufacturing, inventory planning, warehousing and fulfilment, maintaining a capital‐light operating model.
- Balance scalability, speed, quality and cost efficiency across the supply chain.
- Ensure full compliance with all relevant UK regulatory, quality and safety standards for supplements and diagnostics.
- Growth, Performance & Data
- Define and track key performance metrics, including CAC, LTV, conversion, retention, AOV and subscription churn.
- Use data, experimentation and member insight to continuously refine the proposition and commercial model.
- Partner with marketing, ecommerce and in‐club teams to drive acquisition, education, conversion and repeat purchase.
- Apply learnings from Natural Fitness Food and wider member research, particularly around trust, pricing sensitivity and subscription behaviour.
- Leadership & Cross‐Functional Collaboration
- Build and lead a high‐performing supplements and ecommerce team as the business scales.
- Act as the internal authority on supplements, personalisation and the wider market landscape.
- Collaborate closely with product, nutrition, marketing, operations and finance teams.
Required Experience
- Essential
- Significant experience in consumer health, supplements, personalised nutrition, ecommerce or adjacent sectors.
- Proven track record of owning and scaling a P&L in a subscription or repeat‐purchase business.
- Strong commercial judgement with a data‐driven, test‐and‐learn mindset.
- Experience managing suppliers, manufacturing, logistics and fulfilment partners.
- Clear understanding of personalised health, diagnostics or nutrition‐led propositions.
- Comfortable operating both strategically and hands‐on in a fast‐moving environment.
- Strong leadership, stakeholder management and communication skills.
- Desirable
- Background in DTC health brands or premium subscription models.
- Familiarity with UK supplements regulation and quality frameworks.
- Experience working with nutritionists or practitioners supporting elite or high‐performance populations.
What Success Looks Like
- A scaled, profitable supplements and blood testing business with strong margins and predictable subscription revenue.
- Seamless integration between blood diagnostics, nutritionist guidance and personalised supplement plans.
- High member satisfaction, trust and retention, underpinned by measurable health outcomes.
- A robust, scalable and compliant supply chain.
- Third Space positioned as a long‐term health optimisation partner, not just a gym.
Head of Supplements in London employer: Third Space
At Third Space, we pride ourselves on being an exceptional employer that fosters a culture of innovation and collaboration. As the Head of Supplements, you will have the unique opportunity to lead a pivotal growth initiative within a supportive environment that values personal and professional development. Our commitment to employee growth, coupled with our focus on health and wellbeing, ensures that you will thrive in a role that not only challenges you but also allows you to make a meaningful impact on our members' lives.
StudySmarter Expert Advice🤫
We think this is how you could land Head of Supplements in London
✨Tip Number 1
Network like a pro! Reach out to people in the industry, attend events, and connect with potential colleagues on LinkedIn. You never know who might have the inside scoop on job openings or can put in a good word for you.
✨Tip Number 2
Prepare for interviews by researching the company and its products. Understand their mission and values, especially around health and supplements. This will help you tailor your answers and show that you're genuinely interested in being part of their team.
✨Tip Number 3
Practice makes perfect! Conduct mock interviews with friends or use online platforms to get comfortable with common questions. The more you practice, the more confident you'll feel when it’s your turn to shine.
✨Tip Number 4
Don’t forget to follow up after interviews! A quick thank-you email can leave a lasting impression and shows your enthusiasm for the role. Plus, it keeps you on their radar as they make their decision.
We think you need these skills to ace Head of Supplements in London
Some tips for your application 🫡
Tailor Your CV:Make sure your CV speaks directly to the role of Head of Supplements. Highlight your experience in consumer health, supplements, and P&L ownership. We want to see how your background aligns with our vision for a premium blood testing and personalised supplements platform.
Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Use it to tell us why you're passionate about personalised nutrition and how you can drive growth at Third Space. Be sure to mention any relevant achievements that showcase your commercial leadership skills.
Showcase Your Data-Driven Mindset:We love candidates who can leverage data to make informed decisions. In your application, share examples of how you've used metrics to refine a product or service. This will demonstrate your ability to track performance and optimise our offerings.
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands. Plus, it shows us you’re serious about joining the Third Space team!
How to prepare for a job interview at Third Space
✨Know Your Numbers
As the Head of Supplements, you'll be responsible for P&L ownership. Brush up on your financial metrics like revenue growth, gross margin, and EBITDA. Be ready to discuss how you've driven these numbers in past roles and how you plan to do it at Third Space.
✨Showcase Your Commercial Acumen
This role requires a strong commercial strategy. Prepare examples of how you've defined and executed successful strategies in previous positions. Think about how you can leverage data and member insights to optimise pricing and retention in a subscription model.
✨Understand the Customer Journey
You'll need to design an end-to-end customer experience. Familiarise yourself with how blood testing and supplement recommendations can be communicated clearly to customers. Be ready to share ideas on how to enhance customer satisfaction and retention through effective communication.
✨Collaborate and Lead
Leadership and cross-functional collaboration are key. Prepare to discuss your experience in building high-performing teams and how you've worked with marketing, nutrition, and operations teams in the past. Highlight your ability to act as an authority on supplements and personalisation.
