2: Asian river ordeal; it's upset manufacturer (13)

8: A changing sort of forced labour (5-4)

9: Perfect counter-spy equipment (3)

11: Proper to have a little sex? This gives a slanted view (5)

12: Evil colleague, for example, breaking in contrary to law (9)

14: Rejected, for the most part, unlikely chance to buy rubbery substance (9)

16: Big Bird and Ernie auditioning after Sesame Street ends (5)

18: Perfect conviction ends trial (5)

19: Town's rail transport, not express? (9)

21: New lease isn't required (9)

23: Song about river, ocean, and lake (5)

24: Cull out from top ten (3)

26: Consents to accepting decline in rates of change (9)

27: Free sex, lips in beer; it's beyond words (13)

1: National official is here, carrying identification, after challenge overwhelms local center (4-9)

2: Inmate Ian playing dead (9)

3: Material extracted, sent back (5)

4: I'm a stud playing in arena (7)

5: Typical! Pull over in back (7)

6: Drawing, for example, a bit of a cartoon (3)

7: Renowned architect leaving island for long jog (5)

10: Grave study: code-breaking? (13)

13: Visitor made an estimate when audited (5)

15: Jeep model went along to show (5)

17: Make new plan for back pasture (9)

19: Incomprehensible English is the sign of a professional (7)

20: On the other hand, spare second French town (7)

22: Policeman extremely sensitive about opportunity (5)

23: Go up cedar's first branch (5)

25: Heavy metal group X (4)