About 2.4 million people in the UK are waiting for cancer screening, treatment or tests, as a result of disruption to the NHS during the past 10 weeks, according to Cancer Research UK.
It estimates 2.1 million have missed out on screening, while 290,000 people with suspected symptoms have not been referred for hospital tests.
More than 23,000 cancers could have gone undiagnosed during lockdown.
Cancer services are starting to reopen across the UK.
Cancer Research UK’s figures are based on data for England and estimated for the whole of the UK.
During lockdown, the health service focused on the care and treatment of patients with Covid-19, while other services, such as cancer care, were scaled back.
People were still encouraged to seek medical help when they needed it – but