Legislation – Data Protection Act 2018
Changes to legislation:
Data Protection Act 2018, Section 165 is up to date with all changes known to be in force on or before 09 April 2026. There are changes that may be brought into force at a future date. Changes that have been made appear in the content and are referenced with annotations.![]()
Changes to Legislation
Revised legislation carried on this site may not be fully up to date. Changes and effects are recorded by our editorial team in lists which can be found in the ‘Changes to Legislation’ area. Where those effects have yet to be applied to the text of the legislation by the editorial team they are also listed alongside the legislation in the affected provisions. Use the ‘more’ link to open the changes and effects relevant to the provision you are viewing.
Changes and effects yet to be applied to Section 165:
- s. 26(2)(f)(ai) omitted by 2025 c. 18 Sch. 10 para. 9
- s. 44(1)(da) inserted by 2025 c. 18 Sch. 10 para. 10(2)(a)
- s. 44(5)(ca) inserted by 2025 c. 18 Sch. 10 para. 10(3)(a)
- s. 45(2)(ea) inserted by 2025 c. 18 Sch. 10 para. 11(2)(a)
- s. 45(5)(ca) inserted by 2025 c. 18 Sch. 10 para. 11(3)(a)
- s. 45A(2)(ca) inserted by 2025 c. 18 Sch. 10 para. 12
- s. 48(1)(b)(iia) inserted by 2025 c. 18 Sch. 10 para. 13(2)(a)
- s. 48(4)(ba) inserted by 2025 c. 18 Sch. 10 para. 13(3)(a)
- s. 149(5A) inserted by 2025 c. 18 Sch. 10 para. 16(3)
- s. 157(4A) inserted by 2025 c. 18 Sch. 10 para. 18
- s. 165(1) omitted by 2025 c. 18 s. 103(3)(a)
- s. 165(2) words inserted by 2025 c. 18 s. 103(3)(b)
- s. 187(2)(za) inserted by 2025 c. 18 Sch. 10 para. 21(3)(a)
- Sch. 3 para. 8(1)(y) added by 2022 c. 18 (N.I.) Sch. 3 para. 78(3)
Changes and effects yet to be applied to the whole Act associated Parts and Chapters:
Whole provisions yet to be inserted into this Act (including any effects on those provisions):
- s. 26(2)(f)(ai) omitted by 2025 c. 18 Sch. 10 para. 9
- s. 44(1)(da) inserted by 2025 c. 18 Sch. 10 para. 10(2)(a)
- s. 44(5)(ca) inserted by 2025 c. 18 Sch. 10 para. 10(3)(a)
- s. 45(2)(ea) inserted by 2025 c. 18 Sch. 10 para. 11(2)(a)
- s. 45(5)(ca) inserted by 2025 c. 18 Sch. 10 para. 11(3)(a)
- s. 45A(2)(ca) inserted by 2025 c. 18 Sch. 10 para. 12
- s. 48(1)(b)(iia) inserted by 2025 c. 18 Sch. 10 para. 13(2)(a)
- s. 48(4)(ba) inserted by 2025 c. 18 Sch. 10 para. 13(3)(a)
- s. 149(5A) inserted by 2025 c. 18 Sch. 10 para. 16(3)
- s. 157(4A) inserted by 2025 c. 18 Sch. 10 para. 18
- s. 187(2)(za) inserted by 2025 c. 18 Sch. 10 para. 21(3)(a)
- Sch. 3 para. 8(1)(y) added by 2022 c. 18 (N.I.) Sch. 3 para. 78(3)
PART 6Enforcement
Complaints
165Complaints by data subjects
(1)
(2)
A data subject may make a complaint to the Commissioner if the data subject considers that, in connection with personal data relating to him or her, there is an infringement of Part 3 or 4 of this Act.
(3)
The Commissioner must facilitate the making of complaints under subsection (2) by taking steps such as providing a complaint form which can be completed electronically and by other means.
(4)
If the Commissioner receives a complaint under subsection (2), the Commissioner must—
(a)
take appropriate steps to respond to the complaint,
(b)
inform the complainant of the outcome of the complaint,
(c)
inform the complainant of the rights under section 166, and
(d)
if asked to do so by the complainant, provide the complainant with further information about how to pursue the complaint.
(5)
The reference in subsection (4)(a) to taking appropriate steps in response to a complaint includes—
(a)
investigating the subject matter of the complaint, to the extent appropriate, and
(b)
informing the complainant about progress on the complaint, including about whether further investigation or co-ordination with F2a foreign designated authority is necessary.
F3(6)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(7)
In this section—
“foreign designated authority” means an authority designated for the purposes of Article 13 of the Data Protection Convention by a party, other than the United Kingdom, which is bound by that Convention;
F4…