In December 2015 Britain received the last of fourteen CH-47F Chinook helicopters ordered in 2009. Actually Britain wanted to buy another 22 American CH-47Fs back then in order to provide the army with 70 of these transport aircraft. That order was reduced to 14 in 2011 as a result of budget cuts. Because of the long waiting list for Ch-47Fs Britain was initially told it would not receive all 22 until 2017. Because of the reduced order all of them arrived by the end of 2015.
Originally, the 22 new CH-47Fs were to be paid for by cuts in the budgets of the Royal Navy and Royal Air Force. But the defense budget cut kept coming until they reached the CH-47F program. The delivered British Chinooks will cost nearly $40 million each. Britain now has 60 CH-47Fs, all equipped slightly differently depending on how long ago they arrived.
In 2009 the original CH-47F order was justified by the fact that Britain was then losing about a hundred troops in Afghanistan each year, most of them because of roadside and suicide bombs. Many of these casualties could be avoided if more helicopters were available. Back in 2009 media reports pointed out that British troops in Afghanistan had one helicopter for every 700 troops while the Americans had one for every 200. British commanders admitted that they needed (based on American experience) about fifty helicopters. The British government promised more, and the order for 22 Chinooks was part of an effort to make it so, at least in the future. Britain has been using CH-47s since 1980 and these have served in the Falkland Islands, Sierra Leone, Iraq and Afghanistan.
The CH-47 is the best helicopter for use in Afghanistan, having proved itself able to deal with the dust and high altitude operations better than other transport choppers. The CH-47 has been engineered, over the years, to deal with the dust. The first CH-47s entered service in 1962, able to carry only five tons. Current models carry more than twice that. Some 750 CH-47s saw service in Vietnam, and 200 were lost in action.
During 1982-94, 500 CH-47s were rebuilt to the CH-47D standard. The new CH-47F is more durable and easier to maintain than the CH-47D, and most D models will be upgraded to the F standard eventually. Right now, everyone wants more CH-47s (used, refurbs, new, whatever), and there are not enough to go around.