Re: The full list from the Draft IPB
Except that if you look at section 57 of the draft bill it looks like local authorities are also counted as 'relevant public authorities'. I haven't gone into detail, but if you look at the bill...
From the bill: (emphasis added by me)
57 Local authorities as relevant public authorities
(1) A local authority is a relevant public authority for the purposes of this Part.
(2) In this Part “designated senior officer”, in relation to a local authority, means
an individual who holds with the authority—
(a) the position of director, head of service or service manager (or equivalent), or
(b) a higher position.
(3) A designated senior officer of a local authority may grant an authorisation for obtaining communications data only if section 46(1)(a) is satisfied in relation to a purpose within section 46(7)(b).
(4) The Secretary of State may by regulations amend subsection (2).
(5) Sections 58 and 59 impose further restrictions in relation to the grant of
authorisations by local authorities.
Then when you follow this through to section 46 you end up with these reasons, some of which could end up with some quite trivial justifications (prosecuting litterers or checking school applicants anyone?):
(7) It is necessary and proportionate to obtain communications data for a purpose
falling within this subsection if it is necessary and proportionate to obtain the data—
(a) in the interests of national security,
(b) for the purpose of preventing or detecting crime or of preventing disorder,
(c) in the interests of the economic well-being of the United Kingdom so far as those interests are also relevant to the interests of national security,
(d) in the interests of public safety,
(e) for the purpose of protecting public health,
(f) for the purpose of assessing or collecting any tax, duty, levy or other imposition, contribution or charge payable to a government department,
(g) for the purpose, in an emergency, of preventing death or injury or any damage to a person’s physical or mental health, or of mitigating any injury or damage to a person’s physical or mental health,
(h) to assist investigations into alleged miscarriages of justice,
(i) where a person (“P”) has died or is unable to identify themselves because of a physical or mental condition—
(i) to assist in identifying P, or
(ii) to obtain information about P’s next of kin or other persons connected with P or about the reason for P’s death or condition, or
(j) for the purpose of exercising functions relating to—
(i) the regulation of financial services and markets, or
(ii) financial stability.