Thanks Brendan
Nice to see you on the thread
I did get these and wrote another message about 22d (which I've now got) and 27d, which I haven't got, but the message hasn't appeared.
Assuming I have the right answer for 26ac, which I can't fully parse then 27d should be R?R?, for which I can only find one word and can't see why it should be right. So a hint for 27d would be helpful.