Stuck in bottom left corner
17a loving what Thatcher possibly claimed,but I ignored initially ???o?? (7)
14d Money put about to sell one kind of tobacco ???e???s? (9)
15d A queen,perhaps,protected by Duchess and coterie ???a???l? (9)
Thanks for any help
28a gens de peu
I don't know what a gens de peu is, but I do know that this is the answer to the clue. It's an anagram of speed gun, plus the letter e ("...cabbie, finally caught..."); i.e. the final letter of cabbie.