 Around 30,000 suppliers were reported to be owed approximately £1 billion.MP James Frith tabled an early day motion calling on the government to honour all outstanding payments on public contracts for work completed and to enforce public sector 30-day payment regulations.MPs began an investigation into Carillion's pension deficit, amid suggestions that The Pensions Regulator and the firm's pension trustees failed to act after the 2017 profit warnings, putting pensions at risk.