The UK Treasury said on Tuesday that “up to £50 billion of investment” for UK businesses and major infrastructure projects is set to be unlocked through a new agreement with Britain’s biggest pension funds.

The Treasury said 17 workplace pension providers managing around 90% of active savers’ defined contribution pensions signed the Mansion House Accord at a roundtable with the UK Chancellor and UK Minister for Pensions in the City of London.

It said signatories to the Accord will “pledge” to invest 10% of their workplace portfolios in “assets that boost the economy such as infrastructure, property and private equity by 2030.”

The Treasury said least 5% of these portfolios will be “ringfenced” for the UK, expected to release £25 billion directly into the UK economy by 2030.

Signatories to the new commitment include: Aegon, Aon, Aviva, Legal & General, LifeSight, M&G, Mercer, Natwest Cushon, Nest, NOW: Pensions, Phoenix Group, Royal London, Smart Pension, the People’s Pension, SEI, TPT Retirement Solutions and the Universities Superannuation Scheme (USS).

“This investment could support clean energy developments across the country, delivering greater energy security and helping to lower household bills, as well as delivering growth finance to Britain’s world-leading science and technology businesses – creating jobs, boosting businesses and putting more money into people’s pockets,” said the Treasury.

“Pension savers will also benefit from the commitment to invest in private markets. Comparable Australian schemes invest significantly more in private markets and domestic companies than UK schemes, and research suggests greater investment in private markets can deliver security through diversified asset holdings and potentially drive higher returns.

“The pledge follows hot on the heels of securing trade agreements with India and the US, which will add billions of pounds to the UK economy and protect thousands of steel and car manufacturing jobs, as well as a fourth interest rate cut since last Summer. This demonstrates the UK’s strength in navigating a changing world, going further and faster through our Plan for Change to drive growth and put more money into people’s pockets.”

Phoenix Group CEO Andy Briggs said: “This Mansion House Accord will unlock investment in UK private markets while helping deliver better long-term returns and retirements for millions of pension savers. The new commitments have the potential to strengthen the economy by fuelling the growth of British businesses and boosting investment in critical infrastructure.

“Phoenix Group has already taken a lead by launching Future Growth Capital — the first private market investment manager formed to deliver the commitments made in the initial Mansion House Compact — committing £2.5bn over three years to the UK’s most exciting, innovative and fastest growing companies. The Accord is the natural next step, and we’re proud to play our part in delivering better outcomes for our customers and for the wider society.”

Lorna Blyth, Managing Director – Investment Proposition at Aegon UK, said: “Aegon UK is proud to be a signatory of the Mansion House Accord, which aligns with our aim to deliver better long-term outcomes for our pension scheme members.

“We are committed to ensuring our customers can access and share in the potential growth and success of new, innovative companies as part of diversified portfolios. Leveraging our partnership with the British Business Bank, along with our scale and expertise, we are dedicated to developing investment solutions that improve the retirement outcomes of the millions of members of the defined contribution pension schemes we support. We’ve made significant progress in becoming a DC provider fit for the future – but our journey doesn’t end here.

“The Accord is a key element of the Government’s growth agenda, alongside other initiatives likely to transform the UK’s DC pensions market. It comes as the conclusions of the Pensions Investment Review are expected imminently and further fundamental changes are expected in the Pension Schemes Bill later this spring. This makes it essential that the Government adopts a pragmatic approach to implementation.

“Realistic timeframes and a steady supply of high-quality UK investment opportunities across all private asset classes are crucial for ensuring success. This includes collaborating with more organisations such as the British Business Bank to provide access to diverse types of private assets – from private equity to infrastructure, which are all vital for optimising member benefits and developing investment portfolios designed for long term growth.”