Silicon Valley outraged by Apple tax bill: 'Europe is changing rules retroactively'

European commission called unfair in move some say could affect tech industry's future - but others argue Apple shouldn't just 'enrich the 1%'

• Apple to shareholders: order to pay back $14.5bn 'will be overturned'

Ireland's cosy relationship with Silicon Valley has been called into question after the European commission slapped Apple with a whopping $14.6bn tax bill.

The commission argued the "sweetheart" tax arrangements Ireland made with Apple between 1991 and 2015 allowed the tech giant to avoid tax on almost all profits from sales of its products across the EU's single market, booking the profits in Ireland rather than the country where the product was sold.