The rabbi’s wife, Prof Freedman said, “swims there every day…and she wanted to know 'what can we do? and how do we do it?' She is currently creating a group of religious women to take action.”
The change was brought in by the City of London Corporation, which manages Hampstead Heath, after a public consultation.
The corporation claimed the “overwhelming majority” of the 21,000 valid responses to the consultation favoured admitting trans women to the ladies pond.
Opponents of the decision have claimed that close to 50 percent of the responses were deemed invalid, apparently because “they did not address any of the questions on gender identity”.
A JC understands a judicial review challenge is being prepared against the City of London’s decision, in which strictly Orthodox Jewish women are expected to be involved.
Edward Lord, from the City of London Corporation, said: "This policy will ensure our public services do not discriminate against trans people.
"We support a wide range of service users and we want to ensure they can all feel comfortable accessing and enjoying our facilities.
"All communities should be fully respected, and equality and basic human rights upheld."