The Short Version
The annual-report disclosures support this figure exactly. Marks and Spencer Group plc reported statutory profit after tax of £291.9m for 2024/25 versus £425.2m for 2023/24, which is a 31.3% year-on-year decline. The only apparent discrepancy comes from separate accounts for Marks and Spencer plc, a different legal entity from the group named in the claim.