how do I prevent having to fill in the same company details repeatedly

Bank and insurer request largely the same supply chain file

That can be faster, because the core questions from bank and insurer overlap strongly: identity, scale, locations and a few risk indicators. Both want to know what the registered name of the company is, under which number it is registered and how many employees the undertaking has. These are not bank-specific or insurer-specific questions; they are basic data that appear in every portal, only in a different order and with a different label. The supply chain file captures that core once; for each list, only whether the answer is still current is checked.

Where the lists diverge is in the risk questions: a bank more often asks about continuity and information security, an insurer more often about liability and claims history. For those questions, the second layer of the file is relevant — the section that states whether, for example, liability insurance is in place or is a business continuity plan has been established. If a supporting document is missing, that field is left blank rather than guessed at; an empty field is then the honest answer, not a "no" that is not substantiated.

Why identity and scale appear in every portal

That basic data appear in virtually every questionnaire follows from the Trade Register Act 2007: these are precisely the data that are centrally recorded for every business, such as name, number, address and sector. Because bank, insurer and other customers request the same registered data, recording once and reusing per list is sufficient — the source does not change, only the question about it.