Instituts de sondage :
- I.C.M. : http://www.icmresearch.co.uk/
- Ipsos MORI : http://www.ipsos-mori.com/
- YouGov : http://www.yougov.com/
Journaux de qualité :
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The Guardian : http://www.guardian.co.uk/
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The Herald : http://www.theherald.co.uk/
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The Independent : http://www.independent.co.uk/
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The Scotsman : http://www.scotsman.com/
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The Times : http://www.timesonline.co.uk/
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The Western Mail : http://westernmail.newsstand.com/
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The Western Mail, South Wales Echo, Wales on Sunday & Celtic Weekly :
http://icwales.icnetwork.co.uk/