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Convertible Loan Notes (Additional Information) (Details) £ / shares in Units, £ in Millions |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 10, 2023 USD ($) shares | Feb. 10, 2020 GBP (£) £ / shares shares | May 31, 2023 USD ($) | Jun. 30, 2024 USD ($) | Sep. 30, 2023 shares | Jun. 30, 2023 USD ($) shares | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2023 £ / shares | Dec. 31, 2020 £ / shares | Feb. 10, 2020 USD ($) shares
Ordinary Shares | Novartis Pharma [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise Price of Warrants Issued | £ / shares |  | £ 0.265 |  |  |  |  |  |  |  |  |  |  |
Novartis Loan Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate |  | 6.00% |  |  |  |  |  |  |  |  |  |  | 6.00%
Carrying Value of Debt Instrument |  |  |  | $ 4,900,000 |  |  | $ 4,900,000 |  |  | $ 4,400,000 |  |  |
Fair value of convertible debt |  |  |  | $ 3,300,000 |  |  | $ 3,300,000 |  |  | $ 3,100,000 |  |  |
Debt Instrument, Effective Interest Rate |  |  |  | 27.80% |  | 27.80% | 27.80% | 27.80% |  |  |  |  |
Novartis Loan Note [Member] | After Amendments [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Effective Interest Rate |  |  |  |  |  | 37.40% |  | 37.40% |  |  |  |  |
Novartis Loan Note [Member] | Novartis Pharma [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Convertible Note |  | £ 3.8 |  |  |  |  |  |  |  |  |  |  | $ 5,200,000
Conversion Price Per Share | £ / shares |  | £ 0.265 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Maturity Date |  | Feb. 10, 2023 |  |  |  |  |  |  |  |  |  |  |
Warrants Convertible in Equity | shares |  | 1,449,614 |  |  |  |  |  |  |  |  |  |  | 1,449,614
Debt Instrument, Extended Maturity Date | Feb. 10, 2025 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Amended Interest Rate | 9.00% |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Amended Accrued Interest | $ 900,000 |  |  |  |  |  |  |  |  |  |  |  |
Novartis Loan Note [Member] | Ordinary Shares | Novartis Pharma [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants Convertible in Equity | shares | 2,000,000 |  |  |  |  |  |  |  |  |  |  |  |
New Novartis Loan Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Carrying Value of Debt Instrument | $ 5,500,000 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Consideration, Liability Recognised Two | 3,400,000 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Paid in Cash | 900,000 |  |  |  |  |  |  |  |  |  |  |  |
Relative Fair value of the Warrants and The Conversion Option | 1,200,000 |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Extinguishment of Debt | $ 0 |  |  |  |  |  |  |  |  |  |  |  |
Debt, Interest Expense |  |  |  | $ 300,000 |  | $ 200,000 | $ 600,000 | $ 500,000 |  |  |  |  |
Convertible Debt Instrument [Member] | Private Placement Loan Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate |  |  |  |  |  |  |  |  |  |  |  | 6.00% |
Debt Instrument, Maturity Date |  |  |  |  |  |  |  |  | Jun. 03, 2023 |  |  |  |
Debt Instrument, Extended Maturity Date |  |  | Aug. 03, 2023 |  |  |  |  |  |  |  |  |  |
Debt, Interest Expense |  |  |  |  |  | $ 700,000 |  | $ 1,100,000 |  |  |  |  |
Debt Instrument, Effective Interest Rate |  |  |  | 27.10% |  |  | 27.10% |  |  | 25.10% |  |  |
Debt Instrument, Aggregate Principal Amount |  |  |  | $ 4,600,000 |  |  | $ 4,600,000 |  |  |  |  |  |
Issuance of Private Placement Loan Notes |  |  |  |  |  |  |  |  | $ 70,000,000 |  |  |  |
Changes in Carrying Value of Debt Instrument |  |  | $ 600,000 |  |  |  |  |  |  |  |  |  |
Payment of Debt Outstanding Amount |  |  |  |  |  |  |  |  |  | $ 3,200,000 |  |  |
Convertible Debt Instrument [Member] | Ordinary Shares | Private Placement Loan Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion Price Per Share | £ / shares |  |  |  |  |  |  |  |  |  |  |  | £ 0.174 |
Debt Instrument,Conversion, Shares Issued | shares |  |  |  |  | 9,645,200 | 17,774,895 |  |  |  |  |  |  |
Share Issued, Price per Share | £ / shares |  |  |  |  |  |  |  |  |  |  | £ 0.174 |  |

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