Transport for London has postponed plans to build extra trains to add to the Jubilee line fleet which would have enabled more frequent trains to and from Canada Water.
Plans to boost tube capacity are vital to plans by British Land and Southwark Council to build hundreds of new homes, shops and offices at Canada Water.
Cllr Mark Williams, cabinet member for regeneration, said: “This major delay is extremely disappointing for us, and for residents, who share our view that the Jubileel line upgrade is central to our plans for positive improvements to the Canada Water area.
“We need these additional trains to meet current and future demand and for residents to easily connect with the rest of London.
“We will be writing to the Mayor of London to outline our concerns and urge consideration for funding to be assigned to this vital upgrade.”