The memorial plaque marking the site of the Texas Legation

Texas opened the first diplomatic missions to keep itself free from possible invasion by forces next door, Mexico. For 14 years from 1836, Texas had legations in Washington, D.C, London and Paris. The Texas government's aim was to protect itself from invasion and to foster international relations. The Texas Legation in London was located in Pickering Place, off St. James's Street, near St. James's Palace. A plaque was erected on the building where the legation once was, unveiled by the then-Governor Price Daniel in 1963. The plaque reads: 'Texas Legation in this building was the legation for the ministers from the Republic of Texas to the Court of St. James 1836-1845. Erected by the Anglo-Texan Society'. The plaque bears the seal of the Republic of Texas.

Sources: Wikipedia, OpenStreetMap, Wikidata, Wikimedia Commons