Office Space Hunt: Comprehensive Company List

I am in need of a comprehensive list of companies that are currently in the market for office space. This includes startups and small to medium-sized companies that might be actively seeking investment, going through funding, or hiring new staff. Ideal contacts within these companies would be founders, office managers, chiefs of staff, sales managers, VPs, CFOs, CEOs, and EAs. The project requires you to provide: - Company names - Titles of the contacts - Accurate email addresses - Contact numbers - The reason each company may be looking for a new office Potential sources for this data include company websites, industry reports, and lead finding platforms such as Lead Finder, Sifted, Companies House, Beauhurst, and Zoom Info. The focus area for this project is London, targeting: - Startups (5-50 employees) - Small to Medium Enterprises (51-200 employees) Please note, the list can be up to 20,000 contacts. It is crucial that all provided emails are legitimate and do not bounce back as spam. Experience in data sourcing and lead generation is highly desirable.