By Simon Walters And Brendan Carlin PUBLISHED: 19:31 EST, 20 April 2013 | UPDATED: 05:46 EST, 24 April 2013 Britain is in danger of being forced by European judges to allow US-style political advertisements to be shown on television. The European Court of Human Rights (ECHR) is due to rule tomorrow on a test case brought by a  British-based animal rights group. Insiders fear the verdict will go against the Government, meaning any political group can buy time on British television. The European Court of Human rights will rule on whether it's right to ban an advert by an animal rights group about the abuse of apes. A win for the group could pave the way for political 'attack' adverts in Britain
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European Court of Human Rights to rule on advert by animal rights group
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Rules currently prevent commercials from charities and political parties
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Tories fear defeat could pave way for union barons to use adverts to drum up support for strikes
Billions of dollars are spent on political advertisements in @placeholder.