Profits at the supermarket M&S plummeted in the firm’s latest results as it revealed the cost of a recent high-profile cyber attack against it was over £100m.
The group posted a pre-tax profit for the half-year ended September 2025 of £184.1m, down 55.4% from the previous year.
In its interim results, M&S revealed the direct costs of its recent cyber attack, which saw all online sales suspended temporarily, was £101.6m, with further charges of £34m expected in the second half of the financial year, bringing the total costs to £136m.
The incident has contributed significantly to the firm’s statutory profits being almost entirely wiped out, going from £391.9m to just £3.4m, despite overall revenue increasing by 22.5% to £7.9bn.
The company was able to claim as much as £100m in insurance following the attack.
“The past six months have been an extraordinary period for M&S and the one-off effects of the incident are reflected in our first half results,” the company said.
“Despite the substantial disruption, we made further progress and increased investment in our transformation, investing in new stores, launching the long-term modernisation of our food and fashion supply chains, and strengthening our technology infrastructure. These actions are reshaping M&S for restored momentum in the second half of the year and beyond.”
