Short answers, pulled from the story.
India House London was officially established on the 13th of August 1920 when King-Emperor George V issued an Order in Council. The Government of India Act 1919 had previously mandated the creation of this High Commissioner role to handle agency work separate from political administration.
Sir Herbert Baker designed the structure after it was proposed by Indian High Commissioner Sir Atul Chatterjee in 1925. Construction concluded in 1930 and the building was formally inaugurated on the 8th of July 1930 by King-Emperor George V.
The building stands on Aldwych between Bush House and what was then Marconi House which now houses Citibank. It faces both the London School of Economics and King's College London while sitting near Australia House.
Twelve emblems representing provinces of British Raj India decorate the outside including a Bengal tiger above the entrance for Bengal province. Other symbols include Fort St. George for Madras, nine lotuses for Delhi, and a rhinoceros for Assam.
India House London has been a Grade II listed building since 1981 to protect it from unauthorized alteration or demolition. This designation ensures preservation efforts maintain architectural integrity for future generations studying early twentieth-century diplomatic architecture.