Real Estate (Property) Information
Real estate (property) information can be obtained from the Land Registry https://www.gov.uk/search-property-information-land-registry.
For England and Wales see: https://search-property-information.service.gov.uk/
For Scotland see: https://www.ros.gov.uk/
For Northern Ireland see: https://www.nidirect.gov.uk/articles/searching-land-registry#toc-0
For England and Wales, summary property information is free, but title register and title plans are a chargeable service (£3 per download).
Flood risk information can be downloaded from the Environment Agency: https://www.gov.uk/check-flooding
Intellectual Property (Trade Marks, Patents and Registered Designs) Information
In the UK, copyright (including rights in software and databases) and unregistered designs are not registrable and so cannot be searched.
Data Protection Registration
The Information Commissioner’s Office maintains a register of UK data controllers here: https://ico.org.uk/about-the-ico/what-we-do/register-of-fee-payers/