Web Scraping for Verified Marketing Numbers

I'm in need of a professional to help generate a list of highly accurate and verified telephone numbers for marketing purposes. The ideal freelancer will have experience with web scraping and be able to deliver a high volume of numbers with high accuracy.

Key deliverables:
- Extracting telephone numbers from websites of businesses in the UK which could be open to a new website
- Ensuring the numbers are accurate and verified for marketing purposes.

Ideal freelancer skills:
- Proficient in web scraping
- Strong attention to detail
- Experience with marketing data

Please only bid if you can provide concrete evidence of similar past work.