Net finance costs (Tables)

12 Months Ended

Dec. 31, 2024

Net Finance Costs [Abstract]

Summary of Net Finance Costs/(Income)

(a) Net finance costs/(income)

	2024 £m	2023 £m	2022 £m
Interest expense	1,704	1,786	1,602
Interest expense on lease liabilities	38	30	25
Facility fees	17	19	21
Impact of the early repurchase of bonds (note 8(b))	(590)	29	—
Interest related to adjusting tax payables (note 8(b))	80	71	36
Fair value changes on derivative financial instruments, hedged items and investments	90	599	(473)
Fair value change on other financial items (note 8(b))	19	(4)	(2)
Exchange differences	(9)	(449)	524
Finance costs	1,349	2,081	1,733
Interest income under the effective interest method	(251)	(186)	(92)
Finance income	(251)	(186)	(92)
Net finance costs	1,098	1,895	1,641