Member Directory

24Haymarket are a private capital firm focused on disruptive early stage venture and growth equity investments in the UK.  Since inception in 2012, we have invested more than £74 million in 50 companies holding an average of 18% equity ownership.

We follow a strict investment thesis with a focus on verticals – Digital Healthcare, Ed Tech, Cybersecurity, Enterprise Software, Supply Chain and Logistics Technology, Fin Tech, Insure Tech and Legal Services Tech – in the nascent stages of high growth where we can leverage proprietary insight from our Investor Network.  We adhere to an active investment philosophy with a right to a board seat in each investment we pursue combined with an involved post-investment model.

Headquartered in London, with a regional office in Edinburgh, we are distinguished by the calibre and engagement of the 24Haymarket Investor Network.  Our Investor Network includes 100+ senior business leaders combining 3,000+ years of business experience with Director-level experience in companies worth a collective £700 billion.

AAB exists to help clients overcome barriers, achieve their goals and reach their full potential.

We deliver Audit, Business Advisory, ESG, Corporate Finance, Hotel Accounting, Payroll & Employment, Private Client, Tax, and Virtual Finance services globally from offices in the United Kingdom, Ireland and United States.

Encompassing AAB, AAB People, and AAB Wealth, we help businesses at every stage of the lifecycle; so they can effectively manage the two critical elements that make organisations tick – their people and their finances. We believe in the resilience of the human spirit; that with bravery, hard work and perseverance, people can accomplish amazing things.

Gillian is a regulatory consultant specialising in the venture finance sector. She works with EIS fund and portfolio managers as well as capital raisers, promoters, researchers and crowdfunding platforms.

Gillian is known for providing expert and pragmatic solutions to the industry. In addition to her experience working with many EISA members, she is an active advocate of EIS. Gillian chairs our regulatory committee and is a member of the EISA board.

Beyond EIS, Gillian also advises social impact investment firms, private equity firms and FinTech companies such as peer to peer lenders.

Aeropowder is creating a new circular economy powered by surplus feathers – millions of tons of which are generated around the world every single year. Their first product is Pluumo, a thermal packaging material designed to insulated food or pharmaceutical products that outperforms expanded polystyrene. The company is generating early revenue with customers in the UK. With multiple future innovations in the pipeline, the company’s mission is to enable the local manufacturing of high-performance materials, anywhere in the world wherever there are surplus feathers.

Apex Group Ltd., established in Bermuda in 2003, is a global financial services provider offering a single source solution across the whole investment lifecycle. We strategically acquired Mainspring Fund Services Ltd. in 2022, a key provider of custody and nominee services to (S)EIS fund managers and a leading financial provider servicing venture capital funds. Through this acquisition, Mainspring’s existing clients now benefit from the efficiency of our single-source solution, including access to a broad range of services such as capital raising and advisory services, fund services, super ManCo services, digital banking, depositary, custody, corporate services, and a pioneering ESG Ratings and Advisory solution. With over 13,000 employees globally, we provide services into 50 jurisdictions delivering an expansive offering to asset managers, pension funds, allocators, financial institutions, private clients, and family offices.

We are uniquely positioned to meet your diverse needs with high-quality, client-centric, innovative services.

The Aquis Stock Exchange (AQSE) is a primary and secondary market for equity and debt securities with a regulatory environment designed to meet the needs of small-cap issuers wishing to go public or to access growth capital.

AQSE provides opportunities for companies from various countries and sectors to grow, with access to a diverse set of investors (incl. EIS funds), and a supportive advisory community, who understand the needs of entrepreneurial businesses.

With over 100 issuers, ranging from start-ups to scale-ups and beyond, AQSE has facilitated the raising of over £450 million (July 2024) to support company growth. Due to its regulatory status as a recognised stock exchange, securities listed on the AQSE Growth market qualify for a range of tax reliefs, including EIS and reliefs from capital gains and inheritance tax.

Furthermore, AQSE has implemented measures to protect its market, reduce spreads, boost liquidity and ensure that retail investors are treated equally to institutions. AQSE is committed to putting the public back into public markets and becoming the home of growth companies.

BDO LLP is the world’s fifth largest accountancy firm and has 15 offices in the UK with 220 partners and 3,000 staff. David is a tax partner heading up the firm’s specialist team advising on tax efficient investments and particularly the EIS and VCT schemes. David co-authored the Tolleys/Tottel book Venture Capital Taxes” and wrote the “Plus Markets (previously Ofex) Tax Guide”. David represents the CBI on the Tax Law Re-write project in relation to the EIS and VCT tax legislation. David’s clients include company’s raising finance (particularly those floating on AIM), individuals seeking to benefit from tax reliefs and investment banks and other product providers who are raising funds. David splits his time between BDO’s Reading and London offices.”

At Beauhurst, we provide research and insight to help professionals discover and track the UK’s high-growth companies. Our data platform, available at beauhurst.com, is a searchable database of information on the most ambitious businesses in Britain. It is used by leading organisations from across the world of finance, professional services, higher education and government to better understand the high-growth economy.
We regularly produce reports based on our data, examining a diverse range of topics from investment trends to scaleups; FinTech to accelerators.

BigSis is building a broad portfolio of chemical-free insect control solutions that are more effective and more enduring than chemical insecticides. These solutions are based on the sterile insect technique (SIT): sterile males of the pest are released to mate with wild females and so control the population. BigSis’ proprietary automated insect rearing system makes SIT 90% cheaper per hectare; this provides a platform to address dozens of commercially important insect pests worldwide and to substitute the majority of the $17bn chemical insecticide market. BigSis SIT is so safe and so benign that there is little or no regulatory requirement in many jurisdictions. BigSis first solution, launched in the UK in 2023 and delivered as a season-long service, targets the huge unmet need to control the invasive SWD (spotted wing drosophila) fruit fly which can devastate high-value soft fruit crops. BigSis has raised over £6.5 million to date in EIS-eligible rounds and aims to raise a Series B funding round of £7 million in the fourth quarter of 2023.