The test, called EarlyCDT-Lung, will include 10,000 high-risk smokers (defined as having smoked the equivalent of 20 cigarettes per day for over 20 years).
It detects signals produced by the immune system when lung cancer is present.
This can mean up to five years earlier than tumour detection.
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A fine start to the Bank Holiday weekend but some rain will arrive by Sunday.
A rapist has been given three life sentences for a vicious attack on an 81-year-old woman minutes after he sat next to her on a bus.
Ming Jiang, 43, was heavily in debt and chased by creditors when he murdered his wealthy friend.