- McAvoy is one of the UK and Ireland’s market leaders in the manufacturing and rental of premium modular buildings, with a focus on social infrastructure;
- It provides complete turnkey solutions that adhere to the same regulations as traditional buildings but can be delivered up to 50% faster;
- Duke Street is a leading European mid-market investment firm with a strong track record of driving growth in the businesses it acquires;
- Under Duke Street’s ownership, McAvoy is well placed to deliver fleet expansion, innovation, and growth
London, Wednesday 12th November, 2025: OakNorth – the digital bank for entrepreneurs, by entrepreneurs – has provided a £7.5m loan to McAvoy, one of the UK and Ireland’s market leaders in the manufacturing and rental of premium modular buildings. The facility supports the business’ ongoing working capital requirements following its acquisition by European mid-market private equity firm, Duke Street, from Blantyre Capital last month.
Founded in 1972, McAvoy designs, builds, and rents premium space solutions, ranging from temporary modular buildings to fully bespoke permanent buildings. It has extensive experience in supplying to the health, education, pharmaceutical, and commercial sectors throughout the UK and Ireland. It provides complete turnkey solutions that adhere to the same regulations as traditional buildings but can be delivered up to 50% faster. Its modern, custom-built modules are typically more than 70% complete before leaving McAvoy’s 70,000 square-foot purpose-built manufacturing facility in Lisburn, Northern Ireland. This facility has the capacity to design and manufacture up to 1,200 modules annually, making McAvoy one of the largest modular building providers in the UK. While headquartered in Lisburn, McAvoy has over 160 employees across additional offices in Dublin, Birmingham, Bristol, and London.
Since 1997, Duke Street has invested more than €3 billion and made 60 investments across Europe, returning over 25% IRR to its investors since inception through multiple economic cycles. Its investment strategy is concentrated on four sectors: Consumer, Healthcare, Industrials & Engineering and Services, and it typically invests in companies with an enterprise value of between €50m and €350m. The buyout of McAvoy is the second acquisition by Duke Street in social infrastructure, following its 2024 buyout of AGITO Medical.
Joe Thompson, Partner at Duke Street, commented: “OakNorth demonstrated a clear understanding of McAvoy’s business dynamics and Duke Street’s growth strategy, which was crucial in ensuring a smooth and efficient process. The team brought a highly commercial mindset and maintained momentum at every stage, balancing speed with careful structuring. We’ve appreciated Oaknorth’s collaborative approach and commitment to supporting McAvoy’s and Duke Street’s long-term success.”
Navin Dabasia, Debt Finance Director at OakNorth, continued: “McAvoy is a high-quality business delivering essential infrastructure through a modern, capital-efficient model. Its pivot to rentals has been highly successful, generating strong contracted cashflows, and the team’s manufacturing capability and sector alignment give them clear competitive advantages. In Duke Street, they have an incredibly strong sponsor with a long and successful track record of investing across the UK, Ireland, and mainland Europe. We’re delighted to support Duke Street’s investment and back McAvoy’s next stage of growth.”
ENDS
Notes to editors
About OakNorth
Launched in September 2015 and founded by entrepreneurs, OakNorth is a digital bank focused on serving and empowering the lower mid-market (businesses with £1m-£100m in turnover), that are seeking to scale but are routinely underserved or overlooked by traditional banks.
To date, it has provided $18bn to these businesses across a wide range of sectors, achieving performance metrics that place it amongst the top 1% of commercial banks globally. Its loans have directly contributed to the creation of 61,000 jobs, and over 36,000 new homes across the UK and the US – the majority of which are affordable and social housing.
It is authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and the Prudential Regulation Authority.
Visit www.oaknorth.co.uk for more information.
For press inquiries, please email: [email protected]
About Duke Street
At Duke Street, we have backed growth in mid-market European businesses for over twenty years. Our investment strategy is concentrated on four sectors: Consumer, Healthcare, Industrials & Engineering and Services. Typically, we invest in companies with an enterprise value of between €50m and €350m. Our strategy is to identify differentiated opportunities for our investors and to transform the long-term prospects of the companies we invest in. Since 1997, Duke Street has invested more than €3 billion and made 60 investments across Europe. Duke Street has returned over 25% IRR to its investors since inception through multiple economic cycles.
More information: https://www.dukestreet.com
Duke Street media contact
Seven Dials City
Felix Meston