Told you it was going to get messy. When Porsche asked for a judicial review of Mayor Livingstone's new London congestion charge proposals a couple of weeks ago, we didn't think Red Ken would react too kindly.

And, predictably, Transport for London and Livingstone have rejected Porsche's request for changes to the proposed charges. That means Porsche will definitely file a request for judicial review, so we could be set for the juiciest court battle since Kramer vs Kramer or, erm, that bit at the end of My Cousin Vinny.

"The new £25 charge will have no meaningful impact on congestion," says a Porsche spokesman. "TfL's own figures show the anticipated CO2 emissions savings in a year could be equivalent to less than four hours of emissions from Heathrow."

Ken's not impressed, though. At a press meeting yesterday, he stated: "Porsche should focus their attentions on cutting CO2 emissions from the cars they produce, rather than pursuing this pointless legal action which we will vigorously contest."

He also denied claims by mayoral rival Boris Johnson (and most of the British media) that he is planning to extend the current congestion zone. It'll all come out in court, as they say.