This has been explained ISXFEU is doing a direct listing not a IPO no broker involved they need to do their own KYC.
From JK on X:
For info, Identifying a person and then *verifying* their identity are separate concepts.
We have all of our shareholders identified...what ISX need to do now is *verify* their identity, address etc in accordance with Anti Money Laundering Regulations, in order to onboard holders to a CSD.
This approach is because ISXPlc will be seeking direct entry admission to an exchange, not a broker sponsored IPO. In an IPO, the broker handles this aspect.
Direct entry assumes we get sufficient identified free float of existing holders for 'spread'.
Anyone previously involved in an ASX 'RTO' would be familiar with the concept of 'spread' before a list.