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Segmental analysis - Total revenue (Details) - GBP (£) £ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segmental analysis |  |  |
Total revenue | £ 25,382 | £ 16,574 | £ 12,702
Retail Banking |  |  |
Segmental analysis |  |  |
Total revenue | 7,366 | 5,773 | 5,415
Private Banking |  |  |
Segmental analysis |  |  |
Total revenue | 1,157 | 874 | 792
Commercial & Institutional |  |  |
Segmental analysis |  |  |
Total revenue | 12,519 | 7,258 | 5,189
Central Items and other |  |  |
Segmental analysis |  |  |
Total revenue | 4,340 | 2,669 | 1,306
Inter-segmental | Retail Banking |  |  |
Segmental analysis |  |  |
Total revenue | (5) |  | (18)
Inter-segmental | Private Banking |  |  |
Segmental analysis |  |  |
Total revenue | (1,000) | (389) | (127)
Inter-segmental | Commercial & Institutional |  |  |
Segmental analysis |  |  |
Total revenue | 1,602 | 395 | (102)
Inter-segmental | Central Items and other |  |  |
Segmental analysis |  |  |
Total revenue | (597) | (6) | 247
Operating segment |  |  |
Segmental analysis |  |  |
Total revenue | 25,382 | 16,574 | 12,702
Operating segment | Retail Banking |  |  |
Segmental analysis |  |  |
Total revenue | 7,371 | 5,773 | 5,433
Operating segment | Private Banking |  |  |
Segmental analysis |  |  |
Total revenue | 2,157 | 1,263 | 919
Operating segment | Commercial & Institutional |  |  |
Segmental analysis |  |  |
Total revenue | 10,917 | 6,863 | 5,291
Operating segment | Central Items and other |  |  |
Segmental analysis |  |  |
Total revenue | £ 4,937 | £ 2,675 | £ 1,059

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