Basic personal information held by a relevant public authority may, on the application of the designated officer for a magistrates' court, be supplied by the authority to him ... for the purpose of facilitating the enforcement of a section 125A(1) warrant which is so specified.
In this section—
"basic personal information" means a person's name, date of birth or national insurance number or the address (or any of the addresses) of a person;
"relevant public authority" means a Minister of the Crown, government department, local authority or chief officer of police specified in an order made by the Lord Chancellor; and
"a section 125A(1) warrant" means a warrant to which section 125A(1) above applies . . .
Information supplied to any person under subsection (1) above, or this subsection, for the purpose of facilitating the enforcement of a section 125A(1) warrant may be supplied by him for that purpose to—
A person who intentionally or recklessly—
commits an offence.
But it is not an offence under subsection (4) above—
A person guilty of an offence under subsection (4) above is liable—
The power to make orders conferred by subsection (2) above shall be exercisable by statutory instrument which shall be subject to annulment in pursuance of a resolution of either House of Parliament.