Hello, Elle,1d is (f)utilit(y) and Arianism.
Futility could be pointless.
I am presuming the town of Bath is in Somerset.
"Some" is "impressive"
As in, he scored some goal,
In admiration, that's "some" dress you are wearing.
Hi again rusty
A "ghost anagram" is a clue in which the anagram fodder is not actually present, but must be imagined from word play. It's generally disapproved of. I wondered if the "futility" was heading in that direction? As I said, I no longer remember the actual clue.
OK Chris, well I have not a scooby about that, but the clue is,
1,"Bentham's idea: unlimited pointlessness based on heresy (14)"
I do not know names of different types of clues, but I thought that was a reasonably straightforward solve.