Thanks chrise, rosalind, rossim, mamya and others. 27A can not be AGLITTER because of cutting letters, even though it looks correct otherwise.
For 27d. I have MI?R?I?E now, from which I am unable to find a word. Can anybody get a word
Being non-cryptic I think I can put MIGRAINE itself because of the cutting letter, but if it were cryptic crossword then what Mamya's answer AGLITTER fits very well. Thank you all.