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However, despite many cars applying for a permit, TfL has had to make a whole host of changes to several models.
They warn if a vehicle does not meet the minimum star rating, drivers will need to make safety improvements.
In some extreme cases, drivers can even receive a penalty charge notice if their car is not up to any safety standards.
TfL has confirmed 136,000 permits have been issued to date but 70,000 models have needed to be fitted with extra security features.
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