The UK government is preparing a £20.4bn capital injection into two state-backed lenders, a move that would place public finance at the centre of Chancellor John Healey’s first Budget and significantly expand the institutions’ capacity to support business investment and infrastructure.

The package, reported ahead of next week’s Budget and attributed to Treasury officials, would provide additional capital to the British Business Bank and the UK Infrastructure Bank. The measure comes as the government seeks to stimulate growth while facing higher borrowing costs, volatile bond markets and a narrowing fiscal buffer.

State backing for investment

The proposed funding would strengthen the lenders’ ability to provide loans, guarantees and equity financing to companies and major projects. Ministers are expected to present the investment as part of a broader attempt to direct capital towards productive activity, particularly outside London and the south-east.

The British Business Bank supports smaller companies and innovative firms, while the infrastructure lender finances projects linked to areas such as energy, transport and regional development. Extra public capital could allow both institutions to attract additional private-sector funding and increase the scale of their commitments.

The move follows a £150m initiative announced for innovative businesses in northern England, with individual investments designed to draw in private capital. The government has increasingly framed state-backed finance as a way to address gaps in funding for growing companies and strategically important infrastructure.

Budget pressure

The scale of the proposed injection highlights the difficult balance facing Healey before the 28 October Budget. The Chancellor has pledged fiscal discipline, but rising debt-servicing costs and additional defence pressures have reduced room for manoeuvre.

Investors will assess whether the capital increase represents a credible growth strategy or adds to concerns about government borrowing. The Treasury is also considering measures affecting commercial banks, including a possible reversal of the reduction in the banking surcharge. That proposal has already weighed on shares in Barclays, Lloyds Banking Group and NatWest, while the banking industry has warned that higher taxes could weaken the UK’s competitiveness.

Businesses await details

The effectiveness of the lender package will depend on how quickly the new capital reaches businesses and projects capable of generating jobs and productivity gains. It will also depend on whether private investors participate at the scale ministers expect.

There are tentative signs of resilience in the wider economy. The preliminary S&P Global composite purchasing managers’ index rose to 53.1 in October, its strongest reading since February, supported by stronger services orders, manufacturing output and demand linked to artificial-intelligence investment. However, cost pressures remained elevated and consumer confidence deteriorated sharply.

The Budget announcement will therefore be judged against two competing signals: improving business activity and persistent pressure on household finances, inflation and public borrowing. The proposed £20.4bn commitment is set to be one of the clearest tests of whether the government can combine fiscal restraint with an active industrial and investment policy.