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Change & Growth Consultants
for Business, Charities and
the Public Sector

We help ambitious businesses and purpose-led charities achieve their goals through expert, collaborative consultancy.

Facing challenges, change, or growth? Our free consultation gives you clarity, calm, and a clear next step.

No forms. No pressure. Just a useful conversation with someone who’s helped others move forward.

0

Free Consultations Given Since 2019

23- 0 %

Growth Achieved by Underpin Clients in 2025

£ 0 m

Contracts Secured by Clients since 2019

Trying to change the world is hard work. Whether you’re running a business, leading a charity, or managing a public service, your passion is your greatest asset.

We channel that passion, and provide the strategic clarity and practical support you need to make a real, lasting impact. We’re not about jargon or empty promises. We’re here to help you solve problems, grow sustainably, and achieve your vision.

We provide clear strategies, project management, and revenue growth support that is tailored to your unique needs.

Our goal is to transform your strategy and revenue into a powerful engine for success, enabling you to grow confidently and deliver more for the people you serve.

Ready to build a better future?

Book Your Free, No-Obligation Consultation.

  • Lewis has been an amazing source of advice and support for us at It takes a City - challenging how we think and taking us on a journey to improve... read more

    Lis Silver Avatar Lis Silver

    Lewis from Underpin Consultants delivered a fantastic presentation on the power of saying 'No' in business to win more sales. It was highly relevant, engaging and insightful for our exhibitors... read more

    Sara Hemp Avatar Sara Hemp

    Thank you for today's session. The advice was clear, practical and very helpful. You listened carefully and offered thoughtful guidance that gave me a clearer way forward. I would definitely... read more

    Betty Berthebaud Avatar Betty Berthebaud
  • Working with Lewis is a real pleasure. Things get done fast in a friendly and professional way. I would recommend Lewis for the quality of work and care he shows... read more

    Binita Walia Avatar Binita Walia

    Having recently made the move from permanent employment into consulting, Lewis generously took the time to help me bring structure to what was initially a very unformed thought process. He... read more

    Chloe K Avatar Chloe K

    ‘Lewis was instrumental in helping us to go live with a high-profile project. The team were up against it with the timescales, but Lewis’ approach of gathering all the key... read more

    Ben Negus Avatar Ben Negus
  • Lewis is far too modest to ask for reviews himself, but what he does not know about marketing strategy simply has not yet been uncovered. In one seminar session he... read more

    Robin Road Limited Avatar Robin Road Limited

    Lewis was a fantastic help in our conversations, being a very knowledgeable and calm figure in a time of mini-crisis for our organisation. Very well presented points and excellent knowledge... read more

    Thomas Jarratt Avatar Thomas Jarratt

    Lewis has helped me sort through a mountain of ideas to get a clear marketing strategy and overall company vision. He is very genuine and clearly has a passion for... read more

    angel dust Avatar angel dust

For Those Who Want To grow sustainably

Flexible strategy, expert support, and innovative campaigns without the traditional agency model.

We provide expert support for public sector tenders, helping you articulate your social value to win competitive contracts.