After the telling off I got yesterday I was not going to post again but decided not to let it spoil my fun. Bunty - 7ac I don't think it is egotist - think large, showy, bird (possibly a bit like our friend Me!)
teenieleek take no notice. After all you have, and hopefully will continue to make a valuable contribution to this site, which as it is a crossword help forum is also a place for discussion and exchanging of ideas.
Pendragon - didn't respond because I didn't have those either. Could you point me in the right direction with 1dn or 12ac? That corner is still eluding me.
For 1dn, the letter that's missing appears twice. It's an anagram of "ended wife" plus the missing letters, to give the definition "clearly determined".