Guardian 25,538

[stromselkie]

9a Elusive element in (Terence Rattigan's) beaset, hot about dealing with listener (4,5)

[roslyn251254]

rare earth

[Lie-in King]

9a Rare earth - Rat(tigan) + h(ot) (about) 're ear'

[stromselkie]

Thank you both. I couldn't work out why it should be rare earth.