Deferred tax assets are recognised where it is probable that future taxable profit will be available to utilise losses. Unrecognised tax losses are as follows:
| 2017 | 2016 | |||||||||||||||
| Unrecognised | Unrecognised | |||||||||||||||
| deferred tax | deferred tax | |||||||||||||||
| Tax losses | asset | Tax losses | asset | |||||||||||||
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Unrecognised tax losses |
£m | £m | £m | £m | ||||||||||||
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Trading losses expiring: |
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Within 10 years |
802 | 187 | 786 | 255 | ||||||||||||
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More than 10 years |
872 | 99 | 842 | 131 | ||||||||||||
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Available indefinitely |
86 | 14 | 95 | 15 | ||||||||||||
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At 31 December |
1,760 | 300 | 1,723 | 401 | ||||||||||||
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Capital losses |
1,924 | 372 | 2,320 | 396 | ||||||||||||
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At 31 December |
1,924 | 372 | 2,320 | 396 | ||||||||||||
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