Thanks everybody. I did wonder about godwit for no4 but the clue says "returns" so it would be dogwit, but maybe the clue is wrong, will keep thinking.
Hi Hanny73, number 18 is tody ( toady is a lackey and take away the "a") and number 5 is ostrich (os for large, and t for junction, and rich for well off) Glad to help.