Find information about how cancer starts, the signs and symptoms and waiting times for cancer treatment.
For information about the symptoms and treatments for a particular type of cancer, go to our A-Z list of cancer types. You can then choose the cancer type you want to find out more about.
COVID-19 is an infectious illness caused by a type of coronavirus. Some people with cancer are at a higher risk of complications because they have a weakened immune system.
There are waiting time targets for the diagnosis and treatment of cancer in the different UK nations.