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Share-based Payments - Disclosure of weighted average exercise prices for options exercised (Details) | 12 Months Ended
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Dec. 31, 2022 shares £ / shares | Dec. 31, 2022 shares $ / shares | Dec. 31, 2021 shares £ / shares | Dec. 31, 2020 shares £ / shares
Weighted Average Options exercisable [Line Items] |  |  |  |
Number of share options exercised (in dollars per share) | shares | 577,022 | 577,022 | 2,238,187 | 514,410
Weighted average exercise price (in dollars per share) | £ / shares | £ 0.50 |  | £ 0.70 | £ 1.52
Vedanta |  |  |  |
Weighted Average Options exercisable [Line Items] |  |  |  |
Number of share options exercised (in dollars per share) | 400,000 | 400,000 | 52,938 | 813
Weighted average exercise price (in dollars per share) | $ / shares |  | $ 0.02 |  |

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- Definition The number of share options exercised in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2022-03-24 -Paragraph 45 -Subparagraph b -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45_b_iv&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The weighted average exercise price of share options exercised in a share-based payment arrangement. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2022-03-24 -Paragraph 45 -Subparagraph b -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45_b_iv&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition Weighted Average Options exercisable + References No definition available. + Details
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- Details
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