Mercury House is an office building at 124, Theobalds Road, Holborn

Holborn

Holborn is an area of Central London. Holborn is also the name of the area's principal east-west street, running as High Holborn from St Giles's High Street to Gray's Inn Road and then on to Holborn Viaduct...

, London

London

London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

, and has been headquarters to Cable & Wireless

Cable & Wireless

Cable & Wireless Worldwide PLC is a global telecommunications company headquartered in Bracknell, United Kingdom. Cable & Wireless specialises in providing communication networks and services to large corporates, governments, carrier customers and resellers...

 from 1955. It was opened by John Reith

John Reith

John Reith may refer to:*John Reith, 1st Baron Reith , Scottish broadcasting executive*John Reith...

 and was named after the Roman god

Mercury (mythology)

Mercury was a messenger who wore winged sandals, and a god of trade, the son of Maia Maiestas and Jupiter in Roman mythology. His name is related to the Latin word merx , mercari , and merces...

.

The architect was Gordon Jeeves. The interiors were designed by H C Upton, Cable & Wireless's own architect. The three glass panels in the entrance were the work of John Hutton

John Hutton (artist)

John Hutton is most famous for his glass engravings on the Great West Screen of Coventry Cathedral, UK, known as the "Screen of Saints and Angels", 66 larger-than-life figures that took ten years of creation John Hutton (born 1906 in New Zealand and died 1978 in England) is most famous for his...

.

Since December 2006 the building has been home to MediaCom.

Rev. Barrister Maxwell James claims a Mercury House as the site of his offce. Unproven this is the same building.