Whitehat: Digital Marketing Agency


Our Mission : Your Business Growth

Whitehat is a London marketing agency and HubSpot Platinum partner. We organise and run the largest HubSpot User Group in the world (the London HUG). 
We work with B2B and B2C companies within the technology, biotech, manufacturing and other sectors.

These companies tend to be located within the UK or continental Europe or USA and have an average turnover of between £2M and £50M. Their sales cycle is often 6 months or more. They typically have an active direct sales team but with little or no internal marketing capability. They are looking to grow and need help to scale.

We help our clients with lead generation, customer acquisition and client engagement to give them a competitive advantage in their industries.

Our Culture & Core Values

  • Humbly confident: No arrogance, open & honest, ready to listen
  • Always be learning: Always maximising self and others
  • Help first: Add value, abundance, collaborative
  • Do the right thing: Work ourselves out of a job, open & honest with ourselves, our clients, partners and suppliers
  • Do what you say: On time, fully delivered, no excuses

Why Call Whitehat?

Here are some of the reasons that companies reach out to our team:
  • We help marketing managers who are frustrated that they have invested a lot of time and resource into their website but are disappointed that it is not producing results.
  • We help companies who have spent a lot of time and money to provide high quality leads to their sales teams, but it often turns out that those leads may not be as good as they had hoped.
  • We help business owners and senior executives who are frustrated that they can't track the ROI of their marketing activities and are disappointed with their marketing results.
Read our Reviews on HubSpot’s Agency Directory

Our history

Whitehat was founded in 2011 by Clwyd Probert. Clwyd has many years of international experience in both technology and marketing. His academic background is in the areas of biotech (molecular genetics) and computer science. Having been based in New York, and now London, he has worked in the competitive markets of hedge funds and investment banks. As an entrepreneur, he has built and developed several different companies.

In addition to his commitments to the Whitehat Inbound Agency, Clwyd is also heavily focused on delivering practical advice to businesses and entrepreneurs. He is a mentor to post graduate students and teaches marketing, as a guest lecturer, at UCL.

Clwyd Probert Sir David AttenboroughIn his spare time Clwyd works with his wife Manjit and daughter Serena, supporting animal charities at home and abroad. As a patron of Hope4Apes, and The Battersea Cats and Dogs Home and The Born Free Foundation, he has worked alongside Brian May and Sir David Attenborough, Ian Redmond and Virgina McKenna.

Looking for help? You can book a conversation with Clwyd here:


The Buyers Journey

Inbound marketing: the buyers journey


Make your business more visible online.

  • How much budget should you allocate to different digital marketing strategies (social, organic, paid)  to attract traffic to your website?
  • Is your website optimised for search engine queries?

Get higher search engine rankings, attract more traffic to your website and increase brand awareness with a targeted digital marketing strategy.


Give your ideal client (your buyer persona) something of value.

  • Will a ready-to-use template simplify their tasks?
  • Will an educational eBook help them get closer to their business objectives?
  • Will a webinar help them understand future trends?

Create authority content to engage your audience and convert them into leads.


Once your target audience knows you and is interested in your services/products:

  • How will you engage with them?
  • What kind of personalised, dedicated strategy will help you win over your competitors?
  • How will you optimise your CRM to close more deals?
You need a structured plan to get you more paying customers.
Plimpton Testimonial Image

"Inbound marketing delivers 54% more leads into the marketing funnel than traditional outbound leads."

Source: Hubspot

Plimpton Testimonial Image

"Inbound leads cost 61% less than outbound leads."

Source: Hubspot

Want to learn more about Whitehat? Let's talk: Schedule a Call