1) The UK is seen as a leader in open government, being the first country to create an open data portal and passing laws mandating the release of government data.
2) Openness and transparency have a long history in the UK dating back to documents like the Magna Carta and Bill of Rights which established principles of citizens' rights and oversight of government.
3) In recent decades, demands for more openness have increased due to factors like rising citizen desires for information, new technologies, and a push for government accountability.