v3.24.1.1.u2
Goodwill (Tables)
12 Months Ended
Mar. 31, 2024
Intangible assets and goodwill [abstract]  
Schedule of changes in intangible assets and goodwill
Total
£m
Net book value at 1 April 2022
9,532
Exchange adjustments
315
Net book value at 1 April 2023
9,847
Exchange adjustments
(118)
Net book value at 31 March 2024
9,729
Schedule of allocation of goodwill by operations See below for a summary of which operations
our goodwill and indefinite-lived intangibles are allocated to:
2024
2023
CGU or group of CGUs
£m
£m
Goodwill:
National Grid Ventures – US
188
163
New England
1,541
1,609
New York
3,279
3,354
UK Electricity Distribution1
4,721
4,721
Total goodwill
9,729
9,847
Indefinite-lived intangibles (regulatory licences related to UK Electricity Distribution):
West Midlands
518
518
East Midlands
519
519
South Wales
257
257
South West
420
420
Total indefinite-lived intangibles
1,714
1,714
1.This is a combination of the West Midlands, East Midlands, South Wales and South West CGUs, reflecting the level at which the goodwill is monitored.