6) ¨Means of raising¨ - looking for a 4 letter word that is a tool used to 'raise' your car up, perhaps when changing a tyre
+
a
+ one letter for 'pound'
gives you a 6 letter answer - ¨day¨ coupled with the answer is a reference to a well known novel by Frederick Forsyth
18)
The answer is a word for a ¨vile wretch´ -
anagram of ´crimes' + NT (National trust)