We find stuff quickly because we've spent a lot of time on our own research and worked out a few methods. Quite often we are now stuck with our own stuff, and helping others on here make progress gives us the boost we need! Some of us have paid subscriptions for various websites, and are happy to use them for the benefit of others. Many records are also available for free.
If you put "London Gazette" into a search engine, it will give you the site where Official Announcements are put. These announcements include services appointments, medals, honours etc., and business events like bankruptcies and company name changes. The Gazette used to be a paper publication, but these days it just seems to be online. The old issues have been scanned and indexed - user the search under "Historians". The earliest dates are in the 17th century.
"Marylebone" , the area between Paddington and Regent's Park, very rarely gets the prefix "Saint", because that would cause confusion with "St. Mary-le-Bow" the church in the east end, location of the "Bow Bells" so important in the definition of "Cockney".