This seemed so straightforward. Despite having solved all the clues I can't get the theme. I have the only possible solution to 30ac but am struggling to find any more similar which fit the other unclued lights. A tiny hint would be appreciated - I don't have Chambers 2011 which might be a handicap here.
All done but what a surprise to find there are so many, and many of them recent additions to the list I learned as a child from the old First Aid in English book at primary school. It had lots of lists of e.g. animals' homes, names for their young, all sorts of stuff that we had to learn off by heart.