Possible Clues:

• Central London area
• London area
• aka South Belgravia
• Passport to - was an Ealing comedy film
• London district requiring passport from Ealing and Holloway
• London area near Victoria
• Passport to - (nineteen forty nine Ealing comedy)
• Preakness racetrack
• Triple Crown site between Churchill Downs and Belmont
• I am in place, I note, round London district