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Part 4U.K. [F1Market Studies and] Market Investigations

Textual Amendments

Modifications etc. (not altering text)

C1Pt. 4 (ss. 131-184) modified (20.6.2003) by 1988 c. 41, Sch. 7 para. 20(5)-(8) (as substituted by Enterprise Act 2002 (c. 40), ss. 185, 279, Sch. 11 para. 11(3); S.I. 2003/1397, art. 2(1), Sch. (with art. 8)

C3Pt. 4 (ss. 131-184) modified (20.6.2003) by 1993 c. 43, s. 67(2A)(2B) (as substituted by Enterprise Act 2002 (c. 40), ss. 168(9), 279, Sch. 9 para. 21(2)); S.I. 2003/1397, art. 2(1), Sch.

C5Pt. 4 (ss. 131-184) modified (20.6.2003) by 1991 c. 56, s. 31(4) (as substituted by Enterprise Act 2002 (c. 40), ss. 168(9), 279, Sch. 9 para. 19(3)); S.I. 2003/1397, art. 2(1), Sch.

C6Pt. 4 (ss. 131-184) modified (20.6.2003) by 1991 c. 56, s. 31(2A) (as substituted by Enterprise Act 2002 (c. 40), ss. 168(9), 279, Sch. 9 para. 19(2)); S.I. 2003/1397, art. 2(1), Sch.

C7Pt. 4 (ss. 131-184) modified (20.6.2003) by 1984 c. 12, s. 50(2B) (as substituted by Enterprise Act 2002 (c. 40), ss. 168(9), 279, Sch. 9 para. 16(2)); S.I. 2003/1397, art. 2(1), Sch.

C8Pt. 4 (ss. 131-184) modified (20.6.2003) by 1989 c. 29, s. 43(2B) (as substituted by Enterprise Act 2002 (c. 40), ss. 168(9), 279, Sch. 9 para. 18(2)); S.I. 2003/1397, art. 2(1), Sch.

Pt. 4 (ss. 131-184) modified (25.7.2003 for certain purposes and 29.12.2003 for certain purposes) by Communications Act 2003 (c. 21), ss. 370(3), 411(2)(3) (with transitional provisions in Sch. 18); S.I. 2003/1900, arts. 1(2), 2(1), 3(1), Sch. 1 (with arts. 3-6 (as amended (8.12.2003) by S.I. 2003/3142, art. 1(3))); S.I. 2003/3142, art. 3(2)

Pt. 4 (ss. 131-184) modified (N.I.) (1.4.2007) by The Water and Sewerage Services (Northern Ireland) Order 2006 (S.I. 2006/3336 (N.I. 21)), arts. 1(2)(3), 29(4) (with arts. 8(9), 121, 307); S.R. 2007/194, art. 2(2), Sch. 1 Pt. 2 (with Sch. 2)

C11Pt. 4 functions made exercisable concurrently (6.4.2013) by Civil Aviation Act 2012 (c. 19), ss. 60(2), 110(1) (with s. 77(1)-(3), Sch. 10 paras. 12, 17); S.I. 2013/589, art. 2(1)-(3)

C16Pt. 4 certain functions made exercisable concurrently (1.4.2014) by Financial Services (Banking Reform) Act 2013 (c. 33), s. 59(1)-(5), 148(5); S.I. 2014/823, art.

C21Pt. 4: certain functions made exercisable concurrently (26.12.2023) by Energy Act 2023 (c. 52), ss. 36(1)-(3), 334(3)(a) (with s. 38)

Chapter 1U.K. [F2Market Studies and] market investigation references

Textual Amendments

Determination of referencesU.K.

138 Duty to remedy adverse effectsU.K.

(1)Subsection (2) applies where a report of the [F3CMA] has been prepared and published under section 136 within the period permitted by section 137 and contains the decision that there is one or more than one adverse effect on competition.

(2)The [F3CMA] shall, [F4within the period permitted by section 138A,] in relation to each adverse effect on competition, take such action under section 159 or 161 as it considers to be reasonable and practicable—

(a)to remedy, mitigate or prevent the adverse effect on competition concerned; and

(b)to remedy, mitigate or prevent any detrimental effects on customers so far as they have resulted from, or may be expected to result from, the adverse effect on competition.

(3)The decisions of the [F3CMA] under subsection (2) shall be consistent with its decisions as included in its report by virtue of section 134(4) unless there has been a material change of circumstances since the preparation of the report or the [F3CMA] otherwise has a special reason for deciding differently.

(4)In making a decision under subsection (2), the [F3CMA] shall, in particular, have regard to the need to achieve as comprehensive a solution as is reasonable and practicable to the adverse effect on competition concerned and any detrimental effects on customers so far as resulting from the adverse effect on competition.

(5)In making a decision under subsection (2), the [F3CMA] may, in particular, have regard to the effect of any action on any relevant customer benefits of the feature or features of the market [F5or markets] concerned.

(6)The [F3CMA] shall take no action under subsection (2) to remedy, mitigate or prevent any detrimental effect on customers so far as it may be expected to result from the adverse effect on competition concerned if—

(a)no detrimental effect on customers has resulted from the adverse effect on competition; and

(b)the adverse effect on competition is not being remedied, mitigated or prevented.