Treat the jurisdiction as a practical starting point
An offshore company remains a legal entity formed under a particular jurisdiction’s legislation. The useful research questions concern its registrar, legal form, standing and available documents, rather than the label alone. Some registers publish limited identity details while other information must be ordered or obtained through an authorised channel; those differences should be recorded explicitly.
Request evidence that matches the transaction
Use the Companies House overseas directory to locate an appropriate registrar, and consult that authority about extracts or certificates. An LEI record can help cross-reference entities participating in the global identifier system, but it is not universal. If a company document will be used abroad, the HCCH Apostille resources help identify the applicable authentication framework without treating authentication as a guarantee of commercial reliability.