Please note – EISA is not a regulatory body and membership of EISA is not an endorsement of an organisation.

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.

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.


AllBright is a global home for ambitious women, brought to life through our physical spaces and global digital community. AllBright believes every woman should have the chance to shape her own ambition.

Within AllBright thrives a lively community of motivated women, including female founders actively shaping a variety of industries. Through AllBright, members can engage in virtual events, workshops, and dynamic discussions designed to connect like-minded individuals who share a passion for professional growth.

Access motivating online courses and carefully selected daily content. Progress with the help of a personal mentor who understands your ambitions. Whether you’re leading a startup or navigating new ground as a company founder, the goal is clear: guiding you toward success.

AllBright’s influence spans the globe, with a monthly reach of 2.8 million. Remember, as you journey forward, you’re a part of an international collective of female visionaries, collectively striving for excellence and an even playing field.

Embrace the energy AllBright radiates – where opportunities and possibilities are open for the pioneers shaping our world.

Anderson Anderson & Brown LLP is one of the UK’s leading Chartered Accountants + Business Advisory Firms, with offices in Aberdeen, Edinburgh and London. We are a long established firm with a depth of capability, experience and resource to meet your needs.

Our Expertise to Entrepreneurs’ (“E2”) team specialists use their expertise to differentiate themselves in the market by delivering solutions that work for our clients throughout the life of their investment and beyond. Our E2 team have wide experience in assisting clients across a broad range of sectors to secure SEIS and EIS qualifying status from HMRC, and ensure this qualifying status is maintained following investment.

You’ll receive a personalised service geared to your business, delivered by a team of professionals seeking to add value. The E2 team work closely with AAB’s own fundraising team, who have long standing relationships with private equity investors, providing businesses with access to potential investors faster.

Additionally, we assist companies deliver cash benefits through the generous tax reliefs associated with R&D activity, which can itself assist in funding the continued growth of the company. This work involves our R&D specialists identifying qualifying projects and submitting claims to HMRC to secure R&D tax relief.

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 access to companies from a wide range of countries and sectors, with access to a diverse set of investors (incl. EIS funds), and a supportive advisory community, who understand the needs of entrepreneurial businesses.

With more than 100 issuers quoted on the exchange, AQSE has helped companies raise over £120m to help fund their growth. Such companies include winemaker Chapel Down, Britain’s oldest brewer Shepherd Neame, blockchain investment vehicle KR1… which have all enjoyed a successful public life since their flotation on Aquis.

Thanks to AQSE’s regulatory status as a recognised stock exchange, securities admitted to the AQSE Growth market are eligible for the full range of qualifying company tax reliefs, including EIS and reliefs from capital gains and inheritance tax.

Furthermore, AQSE has put a number of measures in place 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.

Anthony Efionayi

Jeremy Davies

Ana Gallacher

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.”

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