v3.26.1
SUBORDINATED LIABILITIES - Additional Information (Details) - GBP (£)
£ in Millions
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Subordinated liabilities [abstract]
Gain (loss) on repurchase of subordinated liabilities
£ 0
£ (3)
X
- References
No definition available.
+ Details
Name:
ifrs-full_SubordinatedLiabilitiesAbstract
Namespace Prefix:
ifrs-full_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Gain (Loss) On Repurchase Of Subordinated Liabilities
+ References
No definition available.
+ Details
Name:
san_GainLossOnRepurchaseOfSubordinatedLiabilities
Namespace Prefix:
san_
Data Type:
xbrli:monetaryItemType
Balance Type:
credit
Period Type:
duration