see url:
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/473770/Draft_Investigatory_Powers_Bill.pdf
The background to the bill is contained in the document " A Question of
Trust".
see
url:https://terrorismlegislationreviewer.independent.gov.uk/wp-content/uploads/2015/06/IPR-Report-Print-Version.pdf
A comparitively easy read...well worth a go... :-).
Enjoy...:-).
ATB
Dougie.