Use data scraping automation, scrape a list of Estate Agents (approx 15-20k listings) Name, Address, number of properties to rent/for sale (CANT SCRAPE PHONE NUMEBR FROM PROPERTY PORTAL AS IT IS A MASKED NUMBER) Then a lookup for their website address and their phone number from the website Remove duplicates Links to scrape from: https://www.zoopla.co.uk/find-agents/estate-agents/birmingham/?q=Birmingham,%20West%20Midlands&radius=40&search_source=find-agents Cities to scrape from to cover all of England: Strategic approach: For efficient coverage, I'd use a grid pattern with centers roughly 70 miles apart (allowing 10 miles of overlap between adjacent circles to ensure no gaps). North to South coverage: ~4-5 rows needed East to West coverage: ~4-5 columns needed Recommended search cities (approximately 20-25 cities): Northern tier: Newcastle, Carlisle, Middlesbrough, Kingston upon Hull Upper-middle tier: Manchester, Leeds, Sheffield, Lincoln Middle tier: Liverpool, Birmingham, Nottingham, Leicester, Norwich Lower-middle tier: Gloucester, Oxford, Cambridge, Ipswich Southern tier: Bristol, Southampton, London, Brighton Southwest coverage: Exeter, Plymouth Additional fills for gaps: Peterborough (eastern gap) Coventry (midlands) York (northern coverage)