Well said, Trevor (at present I'm sharpening my horns). Excellent :) final explanation. Good also ginge, Chrise and Jazzy. Thanks for the nice comments. Here is my working:-
1. smashing! = magic!; reprimand = carpet; MAGIC CARPET = air transporter
2. a lock-up = a cell; king’s in a dungeon = a (Rex) cell; coppers = pence (say = e.g. because copper = a coin {not necessarily a penny}). p {a (Rex) cell} ence = PAR EXCELLENCE = (colloq) wicked {Chambers Thes}. Chambers Dictionary has wicked = excellent and par excellence (adv) = as an example of excellence.
3. car(t); lass = bird (slang: Chambers Thes); las(car)s = LASCARS = Oriental sailors (Chambers).
4. ask = bid; Indian chief = I; BIDI = a cheap thin Indian cigarette (smoke)
5. anag(with abuse) of “serial’s afire” = LAISSER-FAIRE (adj) = permissive (first synonym offered in Chambers Thesaurus; alternative spelling of “laissez-faire” in Chambers Dict).