ɪn tˈuː θˈaʊzənd fˈaɪv, ðə hɛdkwˈɔːɹɾɚz ʌvðə səsˈaɪəɾi mˈuːvd fɹʌm pˈoːɹtlənd plˈeɪs tə pˈɜːpəsbˈɪlt ˈɑːfɪsᵻz ɪn hˈɑːlbɔːɹn.
In 2005, the headquarters of the society moved from Portland Place to purpose-built offices in Holborn.