C1Pt. I modified (5.10.2004) by Energy Act 2004 (c. 20), ss. 184(12), 185(13), 198(2); S.I. 2004/2575, art. 2(1), Sch. 1

C2Pt. I modified (S.) (30.11.2005) by The Electricity from Non-Fossil Fuel Sources (Scotland) Saving Arrangements Order 2005 (S.S.I. 2005/549), arts. 1(1), 9

C3Pt. 1 excluded (30.12.2015) by The Port Talbot Steelworks Generating Station Order 2015 (S.I. 2015/1984), arts. 1, 7(2) (with art. 26)

C4Pt. I (ss. 1-64) applied (1.10.2001) by S.I. 2001/3264, regs. 4(2), 5(2)

C5Pt. I (ss. 1-64) amended (E.W.) (27.10.2000) by S.I. 2000/2727, art. 10

Pt. I (ss. 1-64) amended (7.11.2000) by 2000 c. 27, s. 105(1)(a); S.I. 2000/2974, art. 2, Sch. (subject to transitional provisions in arts. 3-12)

Pt. I (ss. 1-64) amended (E.W.) (1.10.2001) by S.I. 2000/2727, art. 10 (as substituted (1.10.2001) by S.I. 2001/3268, art. 2(13))

F1Ss. 11C-11H and cross-heading inserted (10.11.2011) by The Electricity and Gas (Internal Markets) Regulations 2011 (S.I. 2011/2704), regs. 1(1), 43(8) (with reg. 44)

F2Ss. 12-14A omitted (10.11.2011) by virtue of The Electricity and Gas (Internal Markets) Regulations 2011 (S.I. 2011/2704), regs. 1(1), 43(10) (with reg. 44)