Other intangible assets (Tables)


	Regulatory licences £m	Software £m	Assets in the course of construction £m	Total £m
Cost at 1 April 2022	1,714	2,075	870	4,659
Exchange adjustments	—	79	32	111
Additions	—	34	544	578
Disposals	—	(17)	—	(17)
Reclassifications1	—	895	(885)	10
Cost at 1 April 2023	1,714	3,066	561	5,341
Exchange adjustments	—	(45)	(6)	(51)
Additions	—	17	464	481
Disposals	—	(23)	—	(23)
Reclassifications¹	—	598	(436)	162
Reclassification to held for sale (note 10)	—	(520)	(191)	(711)
Cost at 31 March 2024	1,714	3,093	392	5,199
Accumulated amortisation at 1 April 2022	—	(1,377)	(10)	(1,387)
Exchange adjustments	—	(51)	—	(51)
Amortisation charge for the year	—	(291)	—	(291)
Accumulated amortisation of disposals	—	15	—	15
Reclassifications¹	—	(23)	—	(23)
Accumulated amortisation at 1 April 2023	—	(1,727)	(10)	(1,737)
Exchange adjustments	—	23	—	23
Amortisation charge for the year	—	(301)	—	(301)
Accumulated amortisation of disposals	—	23	—	23
Reclassifications¹	—	(161)	—	(161)
Reclassification to held for sale (note 10)	—	385	—	385
Accumulated amortisation at 31 March 2024	—	(1,758)	(10)	(1,768)
Net book value at 31 March 2024²	1,714	1,335	382	3,431
Net book value at 31 March 2023	1,714	1,339	551	3,604

1.Reclassifications includes amounts transferred to property, plant and equipment (see note 13).

2.The Group has capitalised £320 million (2023: £370 million) in relation to the Gas Business Enablement system in the US, of which £320 million (2023: £369 million) is in service and

is being amortised over 10 years, with the remainder included within assets in the course of construction. A further £81 million (2023: £87 million) relates to our UK general ledger system

within software and is being amortised over 10 years.


				Years
Software				3 to 10
Regulatory licences				Indefinite