A problem one forgets having (7) 12a, a???s?? Amnesia? Which means I have 8d wrong suggestion almost followed by unknown actor (5) t???y
10d more agitated Icelanders left out (9) ???read??
24a high number added to quiver (7)t???b?e
Can someone clarify the wordplay here please- I can see the definition and I assume the high number is either M (thousand) or treble, but it can't be both