Can You Help...? Seeking Historical Data About Mount Street / Park Lane

Is there anybody out there with access to Electoral Rolls or Planning information regarding Mayfair, London, in the 1920s and 30s?

We are trying to find out about the ground floor premises that the Marchsese Malacrida and his wife Najda occupied from 1922 to 1926.

 

It was described as a converted garage that had been transformed into the style of a Venetian pallazzo on the corner of Mount Street and Park Lane. We are wondering whether this would have been where the Grosvenor House Appartments are now – or on the other side where there appears to now be a BWM garage…?

Also, any information about the conversion project that the Marchese was doing at 53 Grosvenor Street during 1934/5.

If you can help in anyway, please feel free to drop us a line HERE