In around half of the practices in the sample, fewer than 50 per cent of cancer patients were seen through the two-week system. Not all patients with cancer visit their GP with symptoms.
Some are diagnosed in A&E, while others have cancer detected during routine tests, or are referred straight to A&E by their GPs because their symptoms are so bad.
The new data has been published by NHS England as part of a raft of information to help patients work out how well their GP practice is performing.
More top news
A father-of-three bled to death after ten teeth were removed during a trip to the dentist, an inquest has heard.
Sunshine with blustery showers and longer downpours
The landowner at the site of excavation to find Ben Needham has said he is considering withdrawing permission to continue with the dig.