The beneficiaries were nominated by public consultation.
There was a thread on MN about itn at the time, where IIRC the majority view was that the continuation of the tax was so wrong in itself that it was also wrong to engage in the decision making process to decide the windfall beneficiaries.
Others did not share that view, took a more pragmatic approach and nominated. The government chose from them in the first rounds. Later ones have been by straight application, and have included charities which are not women only, but where the project predominantly or solely benefits women (eg MIND has benefited)