As an experienced freelancer with a deep understanding of data entry and processing, I am confident I can successfully execute your project. I have worked extensively with Excel and Google Sheets, ensuring that data is accurately organized and easily accessible. My knack for web scraping and web search will be crucial in finding and validating each company's website, as well as obtaining the corresponding Companies House link.
Moreover, my prowess in PowerPoint presentations aligns well with your requirement of transferring the derived data onto Google Slides. With my experience of document formatting and editing, these slides will be professionally done, allowing you to quickly access, analyze, and present the collected information.
I commit to deliver exceptional quality throughout the project - from confirming each website to validating their Companies House link - fully aware of the importance of these details to your database. Your satisfaction is my utmost priority; choose me for this task, and let's transform your project into a resounding success!