Thanks to Brendan, Chrise and Mathetc
I've finished now. I did like 24ac once I got it. I was completely misled by 13d
A few comments. I've been familiar with 5ac since my second year in secondary school (some 60 years ago) when we did Australia, but I'd never heard that it had fruit. I know the word for pity (18ac) as it is my name. I wasn't happy with the clue for 20d and cannot parse 11ac and I'm not convinced by the parsing for 10d.
My FOI was 25ac thanks to the hints on the forum closely followed by 5ac and 14d (the latter from my husband). My LOI was 13d after getting the hint above and my COD was 18ac closely followed by 21ac and 16ac. But I did like 15ac.
As usual many thanks to you all for your help. I'll probably be cooking next week, so may not get started for a day or two after Christmas.