Deliveroo argue that they don’t have any employees or workers, just ‘independent suppliers’ – but their own contracts and instructions make it clear that they do. Here’s a quick roundup of news articles covering IWGB’s fight for Deliveroo workers’ rights:
https://www.ft.com/content/9ad4f936-1a26-11e7-bcac-6d03d067f81f
https://www.theguardian.com/business/2017/apr/05/deliveroo-couriers-employees-managers