"Sarah-Jane" was waving an Antifa flag when making his "Punch A Terf" speech at a "TransPride" rally.
This is the government's response, in 2018, to a petition asking for Antifa to be made a proscribed organisation in the UK.
Note how they specifically mention Women's rights being eroded.

If Antifa WAS currently proscribed the UK, here's the penalties he could expect. 
Isn't it interesting that he's been thrown back in the rotation for 6 months - exactly what he would have got for wearing clothing, carrying an item or flag, or publishing an image of such an item, (on his social media, for example) which identifies him as affiliated to the group.

Still think he's been "released"?

Here's the response to the petition:
https://petition.parliament.uk/archived/petitions/212366

https://media.spinster.xyz/98cf88e4a2e87e6e0c9f06b4bf80b9b5855e375a0598ba7f768dd073554776fe.jpg

https://media.spinster.xyz/15cdbd32122a1d4c82654306fc2ec79852e8d1c9126cccdefa1bf69b8c268812.jpg

https://media.spinster.xyz/aa96b0874f54092c4c7da4fba58a3bac6dae0d9abca2dcf782c156da0b1b7534.jpg

https://media.spinster.xyz/e4389e8c873ae19171a15f5777c675affa771e2fdc803b5f35437e6cbca0724e.jpg