A challenge by campaigners against a ban on demonstrations outside a London abortion clinic has reached the Court of Appeal.
Ealing Council in west London was the first in the country to create a 100-metre protest-free "buffer zone" outside a Marie Stopes clinic following protests.
Alina Dulgheriu, of the Be Here For Me campaign, argued the ban was an unlawful interference with protesters' rights under the European Convention on Human Rights - including the right to freedom of expression.
But the case was dismissed last year by a High Court judge who concluded that, while the ban does interfere with activists' rights, the council was "entitled" to consider it was a "necessary step in a democratic society".
Ms Dulgheriu, 35, will challenge that ruling at a hearing before three senior judges on Tuesday.
A group of mothers who say they were helped by vigil members outside abortion clinics will hold a rally outside the Royal Courts of Justice at 11.30am while the hearing is taking place.
The public spaces protection order came into force in April after reports of "intimidation, harassment and distress" for women using the facility in Mattock Lane.
Ruling on the case in July last year, Mr Justice Turner said:
The judge said his ruling did not give the "green light" to local authorities to impose PSPOs around all abortion clinics and each case must be decided on its own facts.
Ms Dulgheriu says she was offered financial, practical and moral help, as well as accommodation, and now has a "beautiful" daughter.
In a statement following the ruling, she said: "I am saddened and shocked that the court has upheld a PSPO that prevents good people giving help to mothers who desperately want it.
"I am devastated for those women that, since the introduction of the Ealing PSPO, have not been able to access the loving help that I did.
"I feel desperately sorry for the vigil members who since the move to create this PSPO have been consistently subject to abuse on the street and slander online."
Ealing Council leader Julian Bell said at the time of the ruling: