Britain's biggest banks are preparing for a potential surge in unpaid debts after household cash reserves fell to their lowest level in three years, with analysts warning that the sums set aside to cover losses may prove insufficient.
The country's top lenders are expected to provision a combined £4bn for loan losses in 2027, according to an analyst consensus. But that figure risks coming up short as households are squeezed by the cost of living, with consumers increasingly turning to unsecured borrowing such as credit cards, personal loans and overdrafts to cover everyday expenses.
Lento Tanq, senior analyst at Bloomberg Intelligence, said provisions would likely climb higher. He pointed to a «shortened path» between Britons losing their jobs and falling behind on bills, describing the shift as evidence of «mounting financial pressure».
«The acceleration of change suggests households' financial position has been squeezed further over the past year, despite fewer declaring outright financial difficulty,» Tanq said.
The strain follows a period of rising bills driven by the conflict in the Middle East, which sent energy costs soaring. Household energy bills are expected to rise at their sharpest level in four years in January, with a £276 jump, according to figures from consultancy Cornwall Insight.
Research from Bloomberg Intelligence found that 55 per cent of households could now survive no more than three months after a job loss — a three-year record. Tanq said thinner household buffers could lift unsecured credit losses at the top banks.
Banks make provisions for bad loans each quarter, reflecting money set aside on their balance sheets to absorb expected future losses when borrowers fail to repay their debts. Tanq said households were already using credit and savings to absorb living-cost pressure, raising a more immediate warning for unsecured lenders.
Barclays is tipped to face the most exposure because of its dominance in the credit market and personal-loan books. The bank expanded its UK credit card exposure to £17.5bn in the first half of the year, up from £17.2bn at the end of 2025, while personal loans in the UK grew to £8.9bn from £8.5bn. Barclays declined to comment.
UK lenders have already moved to raise loan provisions following the conflict in the Middle East. Barclays set aside £823m for potential loan losses in the first quarter of the year after the US-Iran war broke out, and other banks have lifted their bad loan provisions in recent months.
HSBC increased its forecast for loan losses in 2026 to 45 basis points, meaning the bank was bracing for $4.50 of every $1,000 it has lent out to go unpaid. The lender attributed the revision to «ongoing uncertainty in the outlook».
While unsecured borrowing shows strain, Tanq said mortgage «loss severity should remain lower, while house-price growth is positive and borrower equity is intact». He added that this would bode well for Lloyds, which holds the largest overall mortgage book in the UK, and Santander UK, whose loan book is skewed towards residential mortgages following its takeover of TSB.
The picture leaves lenders balancing cautious provisioning against the risk of understating losses if the labour market weakens further. For households, the warning is more immediate: with savings buffers thinner than at any point in three years, the gap between a lost pay packet and missed repayments has narrowed sharply.