UK's Covid-19 testing situation "comically depressing" says public health expert

Professor Devi Sridhar of Edinburgh University says it's a "comically depressing" situation that we don't have any idea how many people actually have Covid-19 in the UK.

The public health expert says she cannot understand how countries like Senegal and Vietnam have effective testing systems up and running and the UK still doesn't.

She joined Piers and Susanna on today's GMB alongside Shadow Education Secretary Kate Green and journalists Andrew Pierce and Kevin Maguire. Watch the full discussion above.

Boris Johnson will face a grilling from senior MPs today amid a warning that the "failure” of the test and trace system is placing pressure on the health service.

As the system struggles to cope with soaring demand, people have been turning up to accident and emergency to ask for Covid-19 tests. Read more.