Head of Marketing in London

We see a world where we all contribute to a thriving planet and together, we are a collective force for good. The Planet Mark is a sustainability certification which recognises outstanding achievements, encourages action, and builds an empowered community of like‑minded individuals. We work with businesses to rigorously measure their carbon footprint and social value, engage their staff and supply chain to unlock their knowledge and drive passion for change, and communicate their progress to build a positive brand. We help businesses put a purpose at the heart of their organisation that brings social, environmental, and economic considerations together.

We’re looking for a Marketing Leader who can turn insight into impact – someone who blends brand vision with performance discipline. You’ll own and execute a B2B marketing strategy that strengthens Planet Mark's position in the market, builds high‑intent demand, and directly fuels revenue growth. Working closely with the Sales and Product Leadership team, you’ll shape targeted, purpose‑driven communications that resonate across priority sectors and scale our reach.

What that means day to day:

• Design and deliver a marketing strategy that unites brand, performance, SEO, AI‑driven optimisation, and campaigns – driving high‑intent demand and measurable revenue impact.
• Evolve and protect the Planet Mark brand, ensuring consistent, compelling communication that resonates across priority audiences and sectors.
• Lead, coach, and develop a multidisciplinary team executing integrated campaigns, ABM motions, events, paid activity, and digital content.
• Build a data‑first marketing function by owning analytics across traffic, engagement, CAC, pipeline growth, attribution accuracy, and conversion optimisation.
• Oversee continuous optimisation of our digital channels and marketing tech infrastructure to improve insights, efficiency, and customer experience.
• Deliver a strategic events programme – including flagship events, webinars, sector activations, and speaker opportunities – to expand reach and deepen engagement.
• Ensure seamless alignment with Sales and Product to support lead quality, nurture pathways, and customer lifecycle performance.

What you’ll need to be successful:

• A seasoned Marketing Leader with experience of leading B2B marketing functions and driving commercial growth through brand building, SEO, AI‑informed optimisation, content and multi‑channel digital strategies.
• Demonstrated success in building predictable demand engines using analytics, attribution modelling and data‑driven decision making.
• Strong command of tools such as Google Analytics and marketing automation platforms, with the ability to create clarity around pipeline metrics and marketing ROI.
• Leadership and Management experience; leading a multi‑disciplinary marketing function.
• Commercially minded, with an ability to link marketing activity to business outcomes, revenue targets and organisational growth.
• Passionate about sustainability, climate action or purpose‑led business and motivated by marketing that drives meaningful impact.

What you’ll get in return:

We operate a hybrid workplace policy, where you will work from the office in Central London 3 days per week. We want you to be able to do your best work here. We emphasize providing many ways to support our team to do their best work and below are some of the perks and benefits we offer:

• Enhanced Parental Leave
• Generous annual leave
• Healthcare Plan
• Annual Giving Day – an extra day to give back to yourself or your community
• Cycle‑to‑work Scheme
• Pension scheme with employer contributions
• Life Assurance
• Rewards Program – access to discounts and cashback
• LinkedIn Learning License for upskilling & development

Interested but don’t feel you meet all the requirements? Our recruitment team assesses and reviews all applications against the role and business needs. We believe in people having transferable and soft skills and want you to know that we do consider where an individual might not meet all the criteria, but have the aptitude and capability, nonetheless. Our priority is to ensure we set people up for success. We will make a final call based on our determining whether we can offer the necessary support to upskill or provide the developmental support needed for you to get the best out of this opportunity with us!

Bring Your Whole Self to Work. Alcumus is proudly an equal‑opportunity employer. We are committed to ensuring that no candidate is discriminated against because of gender identity and expression, race, disability, ethnicity, sexual orientation, age, colour, region, creed, national origin, or sex. We are dedicated to growing a diverse team while continuing to create an inclusive environment where everyone feels safe and empowered to be themselves.

What you can expect if you apply:

• A response to your application within 15 working days
• An interview process consisting of:

• An initial discovery call with the recruiter
• A first stage interview via Microsoft Teams
• Additional interview (likely face to face) with the stakeholders you’ll be working with closely in the role

We’re keen to ensure our hiring process allows you to be at your best, so if you need us to make any adjustments, please just let us know.