12a, 3words, 2.3.3. In The ?I?, Place for a lark when unsettled.
14d, 2words, 6.3. Estate ???, Vehicle, say in competition upset.
18d, D?????n, Leather serves one's family.
22a, ??s?t?, Substitute needed by keepers at zoo.
24a, 2words, 5.5. ?u??? D?u??, Dazed after lots of hot, spiced booze?.
26a, S???p?, Just manage to get ecstasy afte a struggle.
12a In the air
14d Estate car - 'state' (say, in) 'race' (competition, upset)
18d Does-kin
22a "...keep ERS AT Z oo"
24a Punch-drunk
26a Scrap-E(cstasy)