Euston railway station
The headquarters were at Euston railway station. As traffic increased, it was greatly expanded with the opening in 1849 of the Great Hall, designed by Philip Charles Hardwick in classical style. It was long, wide and high and cost £150,000 (). The station stood on Drummond Street. Further expansion resulted in two additional platforms in the 1870s with four more in the 1890s, bringing the total to 15.