Possible Clues:

• Upscale London neighborhood
• Wealthy district in the West End of London
• Was PM unprejudiced, where only the elite accommodated?
• Can just afford most expensive property for boarders?
• Go immediately after this long-range spring forecast
• London district
• Period of growing charge by cabbies, picked up in London area
• A month, just, in part of London
• Fashionable district in West London
• Blossom, attractive in wealthy district