Up to seven million private sector workers could have their wages paid by the state as firms flock to sign up to the Government’s coronavirus furlough scheme.More than 60 per cent of companies have already said they plan to take advantage of it – with over 40 per cent aiming to furlough at least half of their workforce.British Airways, Philip Green’s Arcadia high-street empire and car maker Nissan are the latest big employers to announce they will use the scheme.The mass take-up should avoid large-scale redundancies but will leave the Government with a massive bill.The Treasury estimates it will cost £10billion for every three million people using the Coronavirus Job Retention Scheme for three months.The scheme will allow employers to claim