serco
Residents, including a new mother who has Covid, say they were told to stop calling for help in the freezing weather as they were "overloading" phone lines.
Tory peer defends use of private sector in creating "a retail organisation" bigger than Asda.
Boris Johnson admits the service run by Tory peer Dido Harding must "improve" after posting worst ever contact tracing figures.
Company claims boost is "an indication of our customer's satisfaction" but critics of firm's role in pandemic say it is "grim beyond belief".
Labour's Rachel Reeves urges Boris Johnson to hand work to local public health teams.
Exclusive: Labour leader also says NHS Test And Trace should be radically overhauled and turned into a "locally led" service.
Shadow cabinet minister Rachel Reeves says the government has "serious questions to answer" over Concentrix's involvement in the service.
Poll shows 74% favour publicly-run system as concerns over contractors like Serco grow.
Labour accuses government of failing to learn lessons of Carillion collapse.