9  Portion of cereal only put out at breakfast? (5,2)

10 Bird that is beginning to suffer juvenile ailment (7)

11 Geeky worker rejected new patent (5)

12 Fake deal I must organize (9)

13 Handsome photo's obscured inconvenient details (4,5)

15 A majority of 24 backing supplementary charge (3-2)

16 Heads of religion indoctrinate people, establishing New Age (5)

18 Saw friend the most (9)

20 Academic's clothing tatty, but was seemingly everlasting (7,2)

23 For example describing one covered by navy's rule (5)

25 Reluctance to move in with waitress somewhat returning (7)

26 Nonsense largely swallowed (7)

27 Keep, perhaps, transgressions unreported if I do this? (4,3,5,3)

 1  Unlikely devotee (5)

 2  No actor played in an exaggerated style (7)

 3  Lesser of two difficult situations on a range? (6,3)

 4  Double negatives: they're frowned upon (2-3)

 5  Charge attracted when on board before King's Cross, to boot? (6,3)

 6  Blazing row likely involves this tone of voice (5)

 7  Left hand protection when dipping into reference book (7)

 8  James perhaps moving in for good in 18th-century dwelling (9)

13 Gathering outside institute's entrance with tone signifying danger? (4,5)

14 Pressing magazines etc, possibly Time covers (9)

15 Officer penning book on Europe's worthy of respect (9)

17 Medicinal effect put down to package mostly? (7)

19 Defeated a will-do disposition (4,3)

21 Criticize gallery and its opening in review (3,2)

22 Approaching onset of total darkness (5)

24 Added response from interviewer who is wooden? (5)