Cash Flow Adjustments and Changes in Working Capital - Schedule of cash flow statement adjustments (Details) - GBP (£) £ in Thousands	6 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Non-cash adjustments
Depreciation, amortisation and impairment of non-financial assets	£ 18,761	£ 16,087
Interest income	(3,522)	(797)
Interest expense	2,060	1,175
Foreign exchange loss	3,408	1,993
Grant income	(1,458)	(1,319)
Research and development tax credit	(2,501)	(1,200)
Share-based compensation expense	23,556	15,909
Fair value movement on contingent consideration	(8,706)	(7,143)
Hyperinflation effect loss	0	5
Fair value movement of financial liabilities	238	286
Loss / (Gain) on disposal of non-current assets	107	(21)
Gain on right of use assets disposals	(110)	(1)
Total non-cash adjustments	31,833	24,974
Net changes in working capital
Decrease / (Increase) in trade and other receivables	7,871	(6,580)
(Decrease) / Increase in trade and other payables	(11,185)	(1,055)
Total changes in working capital	£ (3,314)	£ (7,635)

Adjustments For Fair Value Gain (Loss) of Financial Liabilities

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Adjustments For Fair Value Of Equity Consideration

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Adjustments For Hyperinflation Effect Gain

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Adjustments For Research And Development Tax Credit

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Adjustments for Government Grant Income

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Gains (Losses) On Disposals Of Right-Of-Use Asset

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Net changes in working capital [Abstract]

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Adjustments for decrease (increase) in trade and other receivables to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Trade and other receivables; Profit (loss)]

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Adjustments for depreciation and amortisation expense and impairment loss (reversal of impairment loss) to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Impairment loss; Depreciation and amortisation expense; Impairment loss (reversal of impairment loss) recognised in profit or loss; Profit (loss)]

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Adjustments for increase (decrease) in trade and other payables to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Trade and other payables; Profit (loss)]

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Adjustments for interest expense to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Interest expense; Profit (loss)]

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Adjustments for interest income expense to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Interest income; Profit (loss)]

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Adjustments for losses (gains) on disposal of non-current assets to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Non-current assets; Profit (loss)]

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Adjustments for share-based payments to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss)]

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Adjustments for unrealised foreign exchange losses (gains) to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss)]

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Adjustments, other than changes in working capital, to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss)]

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The increase (decrease) in working capital.

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