OUP came to be known as "(The) Clarendon Press" when printing moved from the Sheldonian Theatre to the Clarendon Building in Broad Street in 1713. The name continued to be used when OUP moved to its present site in Oxford in 1830. The label "Clarendon Press" took on a new meaning when OUP began publishing books through its London office in the early 20th century. To distinguish the two offices, London books were labelled "Oxford University Press" publications, while those from Oxford were labelled "Clarendon Press" books. This labelling ceased in the 1970s, when the London office of OUP closed. Today, OUP reserves "Clarendon Press" as an imprint for Oxford publications of particular academic importance.