A Christian charity learns the outcome today of its appeal over a ban on a London bus advert suggesting gays can be helped to "move out of homosexuality".
Core Issues Trust says that gay and lesbian rights activists are seeking to be the new "moral enforcers" and it is Christian religious conservatives who now need protection for their right to express dissent against "the new orthodoxy".
The ad posters designed for the sides of the capital's buses read: ''Not Gay! Ex-Gay, Post-Gay and Proud. Get over it!''
They were a response to a bus poster campaign by gay rights group Stonewall, which carried the message: ''Some people are gay. Get over it!''
Last month, Paul Diamond told three appeal judges that at the heart of the case was the "ironical" situation in modern British society where ancient Biblical scriptures, which played an important role in forming the nation's morals, were now in danger of containing views which could no longer be expressed "in a land with a reputation for free speech".
The charity accuses London mayor Boris Johnson of unlawfully using his position as chairman of Transport for London (TfL) to obtain the TfL ban of the Christian ad to secure the gay vote and advance his 2012 re-election campaign.
High Court judge Mrs Justice Lang rejected the claim in March and ruled: ''In my view, such unlawfulness has not been established on the evidence.''
Mr Johnson said the Core Issues ad was ''offensive to gays'' and could lead to retaliation against the wider Christian community.
The charity wants Master of the Rolls Lord Dyson, Lord Justice Briggs and Lord Justice Christopher Clarke to uphold its right to freedom of expression under Article 10 of the European Convention on Human Rights, which it says has been violated by the ban. It is also relying on Article 9, which protects the right to freedom of thought, conscience and religion.