Hello Pomona and Devadolly,
I jumped ship purely because the threads weren't N&Cy! I refuse however to be classified as a clever-cloggsis!
Here are hints for 11a, 31a and 14a!
11a, this is a 4 letter answer to the clue, so 3 blank cells. Bradfords lists a 2 letter word for "it"! Surround that with the first and last letters of huge and there is your tree. The last 3 lights are the blank ones.
31a, C is definitely Cornwall's first. Bradford's also gives a 5 letter word meaning "outcast", if you were one you were obliged to shield your face and
ring a bell! You need to shorten that word to get the answer to the clue, there is a blank light in the grid.
14a, is normal, O is Oswald's first, then take up the spout as being an anagram indicator!
There are numerous indications of where the Quotation is taken from, 1a, 13a, 10d to name but 3! You will also need to look at the grid as a bit of a jigsaw, and once you see where the blank lights appear you will be helped! Took me a while to see that, the title as always is useful.
Sorry, but as Devadolly knows I don't do straight answers, just hints. As soon as I saw the Setter I heard a moan of "OOOOOOOOOOOOOOOH NOOOO" from the North West! Time to pour another Ozzy red! Off on holiday on sunday!