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St Helens Also known as Aviva Tower, CGNU Tower

 

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Other Information

  • This is one of only four towers built in London using a top down construction method where the core and crown are built first and then the floors hung from the crown.
  • The then CGU Tower was the first building in the City of London to be taller than the height of St Paul's Cathedral.
  • Arguably the best example of high quality International architecture in London, this building has never been listed by English Heritage despite repeated attempts by campaigners.
  • It has had three name changes in five years. First it was CGNU and then Aviva and is now called St Helen's after the nearby church.

News Articles

28-11-2016 > 1 Undershaft Wins Approval

03-05-2011 > Former CGU Headquarters Sold

Companies

If your company has been involved with the Design/Build, Supply or Maintenance of this building please submit your details.

Architect
Gollins, Melvin and Ward Partnership
Developer
Commercial General Union

Reference Data

Reference No.
99
First Uploaded
19-02-2006
Last Editorial Date
28-11-2016
 

Building Location

Address
1 Undershaft, City of London, London. EC3
Council
City of London
County
London
Region
London
Country
United Kingdom

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Building Specification

Status
Complete
Proposal date
1962
Construction start date
1967
Completion date
1969
Renovation Date
1993
Style
International

Roof Height (AOD)
132.50
Roof Height (AGL)
118.00

St Helens

Total Floors (O.G)
28

Market Data

Primary Use
Office

Floorspace (sq m)
56,097.00

Last Sale Value
£290,000,000.00
Sale Date
2011

Metres > Feet