I use 1Password to store all login and password details. I’m registered with ICO and maintain a strict confidentiality agreement as part of our terms.
All files and data are stored in a Google Workspace or Microsoft Office 365 account.
I have recent DBS clearance and have had previous Home Office Security clearance, when working in the prison service and at the Bank of England.
I’m happy to sign any Non Disclosure Agreements, if required.