In 1901 it was granted the status of a royal borough, and therefore from then was also known as the Royal Borough of Kensington. The status was granted after the death of Queen Victoria, in accordance with her wish (she was born at Kensington Palace in the borough). 
A number of street name plaques still bear the designation "Royal Borough of Kensington." Indeed in the 1971 Disney classic, Bedknobs and Broomsticks, the sign for Portobello Road is shown fleetingly.
The Town Hall in Kensington High Street was an Italianate building dating from 1880 designed by Robert Walker. It was demolished "in controversial circumstances" in June 1982.