There are several websites you can use to search for Notary Publics in London, including:

1. The Faculty Office: The Faculty Office of the Archbishop of Canterbury regulates Notaries Public in England and Wales and maintains a directory of Notaries Public who are authorised to practice in England and Wales. Their website allows you to search for Notaries Public by name, location, or area of specialisation.
2. The Notaries Society: The Notaries Society is a professional membership organisation for Notaries Public in England and Wales. Their website includes a directory of members, which you can search by location or name.
3. FindmyNotary: This is a private search tool providing ratings and details on Notary Public offices in London
4. Yellow Pages: The Yellow Pages website allows you to search for Notaries Public in London by location or name.
5. Yelp: Yelp is a business directory website that includes reviews and ratings of Notaries Public in London. You can use their website to search for Notaries Public by location or name and read reviews from other clients.
6. Google: You can use Google search to find Notaries Public in London by using search terms such as “Notary Public London” or “London Notary Public”. The search results will include a list of Notaries Public in London, along with their contact information and websites.

It is always best to conduct research and compare the Notaries Publics’ credentials, experience, and fees before selecting one for your specific needs.