It was a large RT Xword on the subscriber's envelope. I've changed the D to an N but all the other words fit in. Many thanks for trying. Way back there was an anagram solver which gave you some words which would fit but I can't remember the name of it!!
I have checked them all and I am pretty sure they are all correct. The words I can find are: CHORUS / HURRAH / HOURS / CAROLS / ACROSS / OSCARS / ROARS. Please don't stay up all night!
Maybe another RT subscriber will see this and confirm my letters or otherwise. Have to switch off now and get my very elderly Mother to bed! Many thanks everyone for your offers of help.