If this goes the wrong way - and I'm not giving up yet - then I expect the next practical thing to do will be to demand a change in the law, more loudly than we've ever demanded anything before. They could fix this by repealing the GRA and nullifying all existing GRCs, or by clarifying the EA to say it means biological sex. I rather think the right strategy would be to demand both, loudly enough that the government will be glad to get us off its backs with only the latter. (For now.) Remember, the public is increasingly united in being, in effect, gc. The challenge will be how to enlist all those people who agree with us but haven't so far made noise about it. I think that will go slowly, then all at once.
Re not giving up yet: Akua Reindorf is a commissioner of the EHRC, which intervened in the case with that rather hand-wringing "well yes technically but it makes the law an ass" intervention. So in that sense, in this piece, she is still in role. I don't know to what extent there are genuine legal disagreements and to what extent it's strategy, but the FWS and Sex Matters cases were pretty convincing that the court could just find in FWS's favour! (I recently rewatched it - recommended.)
Anyone seen anything other than the appearance of this piece to say that the judgement is "imminent"? I do hope so.