ACROSS
1 Regular bike, energy replenished by internal combustion (6) CYCLIC CYCL(-e+ic)IC
4 Bone setter takes a blind turn (8) MANDIBLE {A+BLIND}* in ME
10 Attacking — smart to go behind sleeper (9) MOLESTING {MOLE}{STING}
11 About to lift seed (5) CAROB {CA}{ROB}
12 Counselled endlessly about eye (7) OCELLUS COU
13 Veto fully in order (7) NULLIFY*
14 Take out midway in language (5) ERASE {ER{
15 General for a cut back in lighting (8) NAPOLEON {N{A}{POL<=}EON}
18 Stretch regularly — it boosts building activity (8) TECTONIC {
20 Bear with wife daily (5) WHELP {W}{HELP}
23 Being serious, one will show displeasure (7) GRIMACE {GRIM}{ACE}
25 Old animal rejected by Herb (7) OREGANO {O}{REGANO<=}
26 A minor thing to allow a point (5) NORTH [T]
27 Recurring theme of self-determination resolved after Andersen left (9) LEITMOTIF*
28 Simon had organised lecture (8) ADMONISH*
29 Accustomed to be denied justice when wounded (6) INURED IN
DOWN
1 A setter wearing jacket arrived (4,4) CAME OVER {C{A}{ME} OVER}
2 Burn the top off, over time in a volcanic depression (7) CALDERA {
3 Penniless this month — introducing novel characters (9) INSOLVENT {INS{NOVEL*}T}
5 Heart ache in Singapore — can it be treated? (6,8) ANGINA PECTORIS*
6 Of Noble birth, head of clan is doubly covered (5) DUCAL {DU{C
7 Something to eat — one to follow a drill (7) BURRITO {BURR}{1}{TO}
8 Original human, more by evolution (6) EMBRYO*
9 Pricks make you go numb (4,3,7) PINS AND NEEDLES [C&DD]
16 Ordered wrong meal — sound like ox tongue? (3,6) LOW GERMAN*
17 Made fun about a name, got everything one needed (8) SPOONFED {SPOO{N}FED}
19 Saying it's end of the line for farm animals (7) EPIGRAM {
21 Player follows directions, he's doing his job (7) ENACTOR {E}{N}{ACTOR}
22 Rival political groups replace party leader by force in a country (6) UGANDA {U(-p+g)GA}{NDA}
24 Whitewash — England tried to avoid it, to some extent (5) ASHEN [T]
Reference list
Energy = E, Internal Cumbustion = IC, Setter = ME, About = CA, Wife = W, One = ACE, Old = O, Justice = J, Name = N, Directions = N;S;E;W, Force = Gravity = G,
GRID