I'd probably have gone for 17 as a Chorley cake as we're in Lancashire, but Eccles used to be in the county. The plural clue of number 1 probably wants a plural answer - Whitefields, perhaps?
18 has me stumped. I can't even see how you could have misread it - there are no words like saintly or music, are there? Obviously I am just not seeing something, cos all the others are pretty straight clues.....
You are going to get the answers, aren't you? We're not going to go through life wondering.....