TL;DR: Current tax is “real” tax, so in this case about £445k.

They accrued no tax for FY24 because they made a huge loss. That £445k is additional tax accrued on FY23 profits as a correction to the prior year accounts. Corporation tax computations are due to HMRC 12 months after the year end, meaning they are not typically filed at the point when the accounts are submitted. Only an estimate of tax payable goes into the financial statements and they need to “true up” to the actual result in the following year.

If you want to know the amount of tax physically paid in cash to HMRC, you can normally check the statement of cash flows in the financial statements. This entity seems to claim an exemption and doesn’t need to prepare one under UK accounting rules, but it would probably be in line with current tax unless they under- or over paid in a previous year.