Material accounting policies information (Tables)

12 Months Ended

Mar. 31, 2026

Accounting policy [Abstract]

Disclosure of useful lives or depreciation rates, property, plant and equipment

Depreciation methods, useful lives and residual values are reviewed at each reporting date and any changes are considered prospectively. The estimated useful lives are as follows:

Buildings
- Factory and administrative buildings			20 - 50 years
- Ancillary structures			3 - 15 years
Plant and equipment			3 - 15 years
Furniture, fixtures and office equipment			3 - 10 years
Vehicles			4 - 5 years

Disclosure of useful lives or amortisation rates, intangible assets other than goodwill

The estimated useful lives are as follows:

Product related intangibles			3 – 25 years
Other intangibles			3 - 15 years