https://yougov.co.uk/news/2017/04/26/voting-intention-conservatives-45-labour-29-25-26-/
http://blog.lboro.ac.uk/crcc/general-election/media-coverage-of-the-2017-general-election-campaign-report-4/?utm_source=twitter&utm_medium=social&utm_campaign=ge2017&utm_content=coverage#coverage
https://library.wmo.int/doc_num.php?explnum_id=10108
https://www.spectator.co.uk/article/full-text-top-uk-brexit-negotiator-david-frost-on-his-plans-for-an-eu-trade-deal