it is "which" i believe as you have already introduced an essential clause with "these"
I'm not sure that's the issue. The same word is used to start a relative clause, whether the clause is essential or non-essential. Isn't it?
I'd love to leave the bastards out as you suggest, but I'm already having to sort out garbled syntax every couple of lines and I have 40 pages of the stuff to do before 9am. So I probably shouldn't start trying to change the order of what are otherwise OK sentences...
I'm not sure that's the issue. The same word is used to start a relative clause, whether the clause is essential or non-essential. Isn't it?
I'd love to leave the bastards out as you suggest, but I'm already having to sort out garbled syntax every couple of lines and I have 40 pages of the stuff to do before 9am. So I probably shouldn't start trying to change the order of what are otherwise OK sentences...