The delivery company Evri, formerly known as Hermes, paid more than £8m in back pensions payments for more than 6,000 of its drivers last year after pressure from the retirement savings watchdog and the GMB union.
The pensions charge emerged in accounts filed at Companies House last week, showing profits slumped 47% to just under £81m, despite only a 1.4% fall in sales last year as shoppers returned to stores and ordered less stuff online.