Another tough EV. I've only solved one clue so far. Sometimes I just need help with one other to get me going, so may I ask for a hint for, say, 18a, please?
Veterinary to provide government with shelter in church (8)
For those of you who don't have the puzzle, the preamble is rather complicated. There may be 2 or 3 consecutive letters which must be removed from the clue before solving, not leaving any non-words, or it must be thematically treated before entry. I don't know the theme yet, although I suspect it's something to do with the start of the First World War, and lights being extinguished. I may be completely wrong though!
Thanks.