You will need to carefully read and research the conditions of use of material provided by the copyright owner to understand whether permission or payment is required or whether resources can freely be used for TDM. Where the website does not have clear information you will need to contact the rights holder for permission.
You can make a copy of the equivalent of one chapter, article or 10% under Section 40 Fair dealing for purpose of research or study of the Copyright Act 1968 for research or study. The data may not be communicated to others under the section of the Act. Thus you cannot make publicly available the data in an AI system or in a research output such as a publication.