Looking at Electoral Calculus, and be aware this is a lagging indicator because it's their end of October prediction, and a new one will be along in a few days, they're projecting 13 independent wins in mainland GB (Alex Easton in Northern Ireland is a very different sort of independent):
Blackburn (Adnan Hussain incumbent)
Dewsbury and Batley (Iqbal Mohamed incumbent)
Bradford West
Bradford East
Birmingham Perry Barr (Ayoub Khan incumbent)
Birmingham Ladywood
Birmingham Hall Green and Moseley
Leicester South (Shockat Adam incumbent)
Islington North (Jeremy Corbyn incumbent)
East Ham
Bethnal Green and Stepney
Ilford North
Ilford South
Slough
That's probably close to the high tide - there aren't very many other seats that look like obvious targets. (There are a few that leap to mind, like the remaining Tower Hamlets and Newham seats, maybe a couple more in Birmingham, but not very many.)
With the exception of Islington North, where Corbyn has huge personal support, these are all very heavily Muslim constituencies. That means the candidate will be Gaza Independent, i.e. precisely the people the far left want to push out of YP.
Outside of heavily Muslim areas, I don't see very many YP candidates saving their deposits. We have a long history in the UK of far left candidates standing for election with minimal success. The handful of recent successes (think of someone like Counterfire's Michael Lavalette in Preston) have been surfing the wave of Gaza votes. But there have been other cases up north of Green or even Lib Dem candidates benefiting from Gaza votes - whoever was best placed to punish Labour locally.
The far left groups seem to be high on their own farts if they imagine they can trash Corbyn, trash the Gaza MPs and ride to success on the back of Sultana's alleged popularity.
Let's also mention that, for the far left groups, ideology is a problem - extremism doesn't survive contact with normie voters - but potentially a much bigger problem is safeguarding. The SWP's rape coverups are fairly well known (though "Comrade Delta" is the tip of the iceberg), but there have been similar issues in the SPEW, the AWL and the micro-sects. Sultana may have turned her back on the socially conservative element only to ally with the rapey element.