...military? Well, you cannot really charter them...
https://www.flightglobal.com/news/artic ... uk-432221/
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http://www.janes.com/article/66093/uk-b ... ning-helos
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http://defence-blog.com/news/first-ukmf ... itain.html
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http://www.airbushelicopters.com/websit ... _2057.html