Key Project Milestones:
| Milestone |
Progress |
| TWA application submitted |
August 2005 |
| Public Inquiry |
March 2006 |
| TWA approved |
October 2006 |
| Contract awarded for enabling works |
January 2007 |
| Contract awarded for main construction works |
June 2007 |
| Completion of enabling works |
April 2009 |
| Stations complete |
Late 2010 |
| Commencement of testing phase |
Late 2010 |
| Opening of new extension |
August 2011 |
Construction began at each station:
- Star Lane - September 2008
- Canning Town - September 2008
- Stratford International - October 2008
- West Ham - October 2008
- Abbey Road - December 2008
- Stratford - April 2009
- Stratford High Street - April 2009