Motorcyclists have lost the latest round of their legal battle to block on-street parking fees in the heart of London.
They are now considering taking their case to Europe.
The "No To Bike Parking Tax" campaign (NTBPT) asked the Court of Appeal to overturn a High Court decision backing £1-a-day charges introduced by Westminster City Council.
But two senior judges ruled there was "nothing in the grounds of appeal" and dismissed their case.
Warren Djanogly, who led the motorcyclists' campaign, said: "We are hugely disappointed, but it is not over yet.
"We are now thinking of taking our case to the European courts where we expect to get a fairer hearing."
The British Motorcyclists Federation had urged motorcyclists all over the country to support the legal action, unofficially estimated to have cost more than £180.000. It fears that if the Westminster decision stands, it could signal the end for free parking for motorcyclists all over the country.
Westminster declared the appeal court ruling by three senior judges - Lord Justice Maurice Kay, Lady Justice Smith and Lord Justice Moore-Bick - to be "a landmark victory".
The council said in a statement that it welcomed Lord Justice Maurice Kay's ruling that it was justified in charging motorbikes as a way of helping to regulate demand for on-street parking space.
Lee Rowley, Westminster Council's Cabinet member for parking and transportation, said: "This case has cost local taxpayers tens of thousands of pounds in legal fees and staff time and we hope this ruling will finally draw a line under the issue."