Controversial system still unable to reach nearly 40% of those who should be self-isolating.
Boris Johnson admits the service run by Tory peer Dido Harding must "improve" after posting worst ever contact tracing figures.
Firms with no history of supplying the products they were paid for, a business linked to Brexit lobbyists, and a dormant company were among the beneficiaries.
The failure of Carillion has sent a shock through the system. But we must resist a knee jerk reaction which would see the public service market place quashed
The company employs 73,000 people.