Income taxes - Change in Tax Rate (Details) |
12 Months Ended | |||||
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Apr. 01, 2023 |
Dec. 31, 2023 |
Dec. 31, 2022
GBP (£)
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Dec. 31, 2021
USD ($)
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Dec. 31, 2020 |
Dec. 31, 2022
USD ($)
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Income taxes | ||||||
Increase in net deferred tax asset and corresponding valuation allowance | $ 21,481,000 | |||||
U.K. | ||||||
Income taxes | ||||||
Tax rate (as a percent) | 19.00% | 19.00% | 19.00% | 19.00% | ||
Difference in tax rates | 25.00% | |||||
U.K. | Forecast | ||||||
Income taxes | ||||||
Tax rate (as a percent) | 25.00% | 25.00% | ||||
U.S. | ||||||
Income taxes | ||||||
Difference in tax rates | 21.00% | 21.00% | 21.00% | |||
His Majesty's Revenue and Customs (HMRC) | ||||||
Income taxes | ||||||
Tax rate (as a percent) | 19.00% | 19.00% | 19.00% | |||
Operating Loss Carryforwards | $ 526,784,000 | |||||
Expenditure credit carryforward | $ 760,000 | |||||
Annual allowance | £ | £ 5,000,000 | |||||
Percentage on taxable profit | 50.00% | |||||
Internal Revenue Service (IRS) | ||||||
Income taxes | ||||||
Tax credit carryforwards | $ 4,136,000 | |||||
Tax credit carried forward period | 20 years |
X | ||||||||||
- Definition Percentage of domestic federal statutory tax rate applicable to deferred taxes. No definition available.
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- Definition Amount of expenditure credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. No definition available.
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- Definition Amount of annual allowance for operating loss carryforwards and tax credit carryforward. No definition available.
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- Definition "Percentage on taxable profit for operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws, and the amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws." No definition available.
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- Definition It represents the period of tax credit carryforwards can be carried forward. No definition available.
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- References No definition available.
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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