The number of people in England waiting longer than six weeks for tests and scans increased five-fold between March and April.
The Labour Party is calling for a plan to deal with this backlog in non-Covid services.
NHS England’s constitution says patients should wait no longer than six weeks for diagnostic tests.
The government said new scanners and equipment had been provided as part of its coronavirus response.
Figures published by NHS England this month showed almost 470,000 people had been waiting longer than six weeks for tests, including for cancer, at the end of April.
That’s five times as many as were waiting at the end of March.
In February, before coronavirus took hold in the UK, fewer than 3% of people waited longer than six