65 Cromwell Avenue, Highgate in 1956

[hevside]

Hello, does anyone have any trade directories that may show which company was in this building in about 1956. In earlier times it was called India House and bears a blue plaque to Vinayak Damodar Savarkar. I am researching someone who gave that address as their workplace as a commercial clerk in 1956 and would love to know who they worked for. Many thanks.