Duet Partners
Tel: +44 (0) 20 7416 6630 / Email: partners@duetpartners.com

Startup to Scaleup Advisory

We help early stage Tech companies raise capital and grow

The Chasm

The relentless decline in VC transactions at all stages has created increasing anxiety for entrepreneurs in recent times. Across Europe, only 1 in 5 startup companies makes it to Series A and early scaling. Only half of these go on to reach Series B.

Conventional approaches to capital raising are leaving businesses ill-prepared. Founders have never been so uncertain about the future and must dramatically rethink their funding strategies. Expert insight and practical support and are hard to find.

Duet Partners has reshaped the role of early stage corporate finance to meet these needs. As trusted advisors to a growing cadre of high tech startups, we are forging long term relationships with some of the UK's most respected entrepreneurs.

We’ve worked with dozens of CEOs on the transition from startup to scaleup, helping raise over $100M. These results, together with an extensive client list, bear testament to a different way of thinking.

This is a new era. We have your back.

We have helped dozens of companies transition to the scaleup phase

Who We Are

The founders have over 30 years' experience working in the Tech sector, from Silicon Valley corporates to UK startups.

We are business builders that have raised over $200M during our careers and have deep insights into the global funding market.

What We Do

We help early stage Tech companies raise capital and grow. Our focus is late Seed to early Growth (pre-A, Series A & B).

We have worked with dozens of entrepreneurs, building and executing roadmaps for funding success and value creation.

How We Do It

We use proven methods to prepare businesses for the funding challenge. We then network them into the funding ecosystem.  

We provide close support to founders through the entire process and develop long term relationships as trusted advisors.


We engage as early as possible in the new funding cycle to ensure alignment between the funding strategy and the business strategy.

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Funding Plan

Investment Analysis: identifying target investors, optimising the investment proposition, and developing the funding strategy. All stages from Seed to Growth.

"The investment analysis work that Duet does is first class, invaluable and worth every penny."
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Capital Raising

Funding Mandate: managing fundraising projects from materials development to money in the bank. Focus on Venture & Growth stages (Series A onwards).

"The process was managed in a highly effective, professional way and we achieved all of the targets we had set.."
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Corporate Advisory

Scaleup Support: specialist advice on all aspects of funding strategy, capital raising, financial planning, and more. All stages from Seed to Growth.

"...a clear and insightful analysis of where our business was, and what we needed to do to deliver value and grow."


  • "I engaged Duet Partners to run an ‘A' round funding process for the company. They helped us engage with a high quality syndicate combining both financial and strategic VC’s. The process was managed in a highly effective, professional way and we achieved all of the targets we had set for ourselves at the beginning of the project. I would highly recommend John and the team to other organisations looking for VC funding."

    Steve Kelly, CEO/Founder, SmartKem

  • "Working with John is empowering and reassuring. He has a brilliant ability to get under the skin of a business and it’s key people, spot superb opportunities and help to execute on them. The investment analysis work that Duet do is first class, invaluable and worth every penny. I’d recommend it to any business looking to scale-up and seize every growth opportunity along the way. I also love the fact that they’ve very selective about the businesses with whom they choose to work. You know once they’re on your side, that you’re in the best hands and that they’re putting their ‘might’ behind you."

    Merlie Calvert, Founder & CEO, Farillio

  • “The Duet team brings a real depth of experience to early stage company building and this was immediately apparent in the funding preparation stage. A well managed capital raise was then successfully undertaken syndicating both VC and strategic investors. We really enjoyed working with John and Jonathan and look forward to further engagements in the future.”

    Andy Heaton, Founder & CEO, enModus Ltd

  • "Duet Partners are the very best at assessing and then delivering the best financing solution available. They have an extensive range of contacts throughout the industry both in the UK, the US and Europe. In my experience, this resulted in investments that supported our long term objectives whilst meeting immediate term needs. A great team to work with and would use them again."

    Mike LeGoff, former CEO, Plessey Semiconductors Limited

  • "Duet provided a clear and insightful analysis of where our business was, and what we needed to do to deliver value, and grow. Those priorities are on my desk and the focus of my activities every week. We much appreciated their work and hope to engage them further in the next round of fundraising."

    Chris Smith, Managing Director, G-Volution Ltd

  • "The Investment Analysis process provided great insight into the current funding market and an excellent critique of our investment proposition. We have since retained Duet to assist in the further development of the funding strategy for the next round and to help ensure our state of readiness. Their advice has been highly valued.”

    Andy Travers, CEO, Ceres Holographics Ltd.