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This action is now finished but you can continue to support us by emailing David Cameron.
Putting cigarettes in standard, plain packs will give millions of children one less reason to start smoking. Ask the Prime Minister to let Parliament decide.
Every year in the UK 207,000 11-15 year olds take up smoking.
Help us make a difference
The campaign for standard packs has been supported by over 200,000 people – and 80,000 of these are Cancer Research UK supporters.