7ac Ken Littlehill, we hear, is 'nervous' (9) ???W????? 12ac Yank in St Paul's briefly, perhaps? (6) ?R??? WRENCH?? 15dn Setter's unable to bear hints of lactose used by restaurants as sweetener (9)???R????? 17ac Trail for 'The Sopranos' upsetting -- feverishly hasten to remove (5) ??O?R SPOOR??