12a. Severe. Had astringent in but puts others out. ???R?N?E?T
15a. Informer. Had taleteller in but again don’t think it’s right. T?L???L?ER
Grateful for any help. Thanks.
We probably need to go through where each of your letters came from to complete this.
I'm finding this confusing- you originally said the 7th letter of 15A was L- so where was that from if you didn't have the answer to 16d?