The Leeds-based grocer has received the windfall due to a strong return from the company’s Save As You Earn scheme, which allowed for staff to save between £5 and £300 from their salary each month for three years starting in 2016.

After that three-year saving period, staff were then able to buy shares in Asda’s parent company Walmart at a 20% discount. Since 2016, Walmart shares have more than doubled, from £36.99 to £87.12 per share at the maturity date of July 1, 2019.

A staff member putting aside an average of £70 per month would have saved £2,520 over three years but received £5,924 in their bank account.