<p>Estimates of the level of air passenger duty rates required to deliver a broadly revenue neutral move to a two band system were published in the 2011 consultation document available at:</p><p>http://webarchive.nationalarchives.gov.uk/20130129110402/http://www.hm-treasury.gov.uk/2011budget_airpassenger.htm</p><p>Treasury Ministers and officials have meetings and discussions with a wide variety of organisations as part of the process of policy development and delivery. The Treasury publishes a list of ministerial meetings with external organisations, available at:</p><p>https://www.gov.uk/government/organisations/hm-treasury/series/hmt-ministers-meetings-hospitality-gifts-and-overseas-travel</p>