None of London's first wave of controversial polyclinics will deliver all its services from a single new standalone building.
The first polyclinics will instead involve existing services working more closely together, Healthcare for London has confirmed.
The plans for "federated" polyclincs are at odds with Lord Darzi's original recommendation that they would offer a vast range of services "all in one place".
But the use of federated clinics could dilute some of the controversy that has surrounded polyclinics since they were proposed for the capital by the now health minister in his July 2007 report, A Framework for Action.
Healthcare for London programme director David Sissling had told primary care trusts in May to push on with plans to introduce the "full range" of polyclinic models envisaged by Lord Darzi. But all of the first wave PCTs have shunned other models for the less controversial federated scheme.
An NHS London spokesman said this did not mean a policy U-turn.
"It's not by design that the first groups are all federated, it's just that the proposals accepted for the first wave have all put that forward," he said. He added that PCTs would not be forced to use particular models in order to ensure all were tried.
Hammersmith and Fulham PCT chair Jeff Zitron said it would be "unfortunate" if all PCTs adopted the federated model as a result of the controversy over the "co-located" polyclinic model.
"The message Darzi was trying to get across is that it's a flexible model," he said. Hammersmith and Fulham hoped to create a co-located polyclinic in White City.
Healthcare For London, which is funded and led by PCTs, is discussing how it can monitor whether the polyclinics are delivering their intended benefits. Mr Sissling said particular attention would also be given to user experience and quality of care. "We think it is important that there is an extension to the range of services," Mr Sissling added.