150 Verified Cleaning Contract Leads

I need a focused list of 150 contract-cleaning companies that service private and small/medium sites across East and North London. Every record must be verified by a live phone call—the method I trust most—and sourced from reputable online directories such as Yell, Checkatrade, or similar platforms. Each company on the list must openly advertise office-cleaning services.

Deliverables
• Initial paid sample: 10 leads with proof of your phone verification (call note, timestamped log, or brief recording) and the exact source link for each record.
• Final delivery: 140 additional leads, provided within one week of sample approval.
• Format: Excel file containing columns for Company, Contact Name, Email, Phone, Website, Services, Area, Source URL, and Verification Note.

Quality checkpoints
• All emails and phone numbers must connect to decision-makers or senior staff—no generic “info@” unless that is the only published address.
• No duplicates, franchises, or companies outside East or North London boroughs.
• Any record that bounces or fails a follow-up spot check must be replaced at no extra cost.

When you reply, please quote your total price, confirm you can accept PayPal, and briefly outline how you will handle the call verification process and document it.

Looking forward to working with someone who can hit these targets quickly and accurately.