§ 22. Mr. Havard
To ask the Secretary of State for Health how much of the national blood supply was used on cancer patients as part of their treatment; and, on average, how old that blood was when it was given to them, in the past 12 months. 
§ Mr. Hutton
The National Blood Service estimates that approximately 30 per cent. of red cells collected from blood donations are given to patients with cancer-related illnesses.
All fresh blood components in the national health service are used within strict expiry dates.