Across:
8 Work (LABOUR) for the scientists (LAB-) from old (-O-), old city (-UR) (LABOUR),
9 Part of the body (HEAD -) with a (-A-) revolutionary (-CHE) (HEADACHE) pain at the top (HEADACHE),
10 Expects to hear all the evidence (JURY) from both sides of Just War Theory (from both sides of ‘just war theory’ = JURY),
11 Not having power, The Shadows (FRONT BENCH) not (not = -ONT) playing (= anagram indicator) bass (bass = -B-) in a manner of speaking (French = FR- -ENCH) (FRONT BENCH),
12 Women (W-) from Britain (-B-) in Asia (Asia = -ASA-I) mixing up (= anagram indicator) (WASABI) hot condiment (WASABI),
14 Settle the bill (PAY-) for Penny (-P-) to improve (-HONE) (PAYPHONE) old communications unit synonymous with The Street (PAYPHONE),
15 It’s boring (DRILL) on coach (INSTRUCTOR) (DRILL INSTRUCTOR) with one of those giving private instruction (giving private/army instruction = DRILL INSTRUCTOR),
18 Big (LARGE-) ship (-SS-) linked to oriental (east = -E) (LARGESSE) charity (LARGESSE),
20 Profit (NET-) from introductions to the literary essay (introductions to ‘the literary essay’ = -TLE) (NETTLE) – the one synonymous with Sting (NETTLE),
22 Tour by Queen (ROYAL VISIT), Prince (ROYAL) and The Tourists will do (VISIT) (ROYAL VISIT),
24 Chap from the pharmacy (‘chap’ from the ‘pharmacy’ = rmay = ARMY) is a major employer (ARMY),
25 The Don’s (college dons = TEACHERS) fixing (= anagram indicator) the races (the races = TEACHERS),
26 Fool (NITWIT) with identical twin dismisses nice lad (‘identical twin’ dismisses ‘nice lad’ = titwin = NITWIT).
Down:
1 The foreign (the = LA-) copper (-CU-) leads new (-N-) agency (-A) (LACUNA) – it concerns gap in statement perhaps (LACUNA),
2 Expanse (BODY) of marl dug out of Lombardy (‘marl’ dug out/missing from ‘Lombardy’ = obdy = BODY),
3 The writing is on the wall (GRAFFITI) and it can be cutting (graft = GRAF-T-) about endless (x) drug taking (‘fix’ without ‘x’ = -FI-) at institute (-I) (GRAFFITI),
4 Get lost (SHOO) in short (t) film (‘shoot’ without ‘t’ = SHOO),
5 Danish (Danish PASTRY) model (= anagram indicator) parts (parts = PASTR-) with Yankee (-Y) (PASTRY),
6 Qualify (MAKE THE CUT) encouragement for a surgeon (MAKE THE CUT),
7 Big flower (big flower/river = THE CONGO river) company (CO-) behind (= position indicator) most of (m) them (‘them’ without ‘m’ = THE) Nerines growing on summits (‘Nerines growing on’ summits = -NGO) (THE CONGO),
13 Party up north (Alliance Party = ALL-IANCE) embraces, for example (e.g. = -EG-) (ALLEGIANCE), loyalty (ALLEGIANCE),
14 No longer fashionable (PASSE) to back off (d) getting one’s exams (passed) (‘passed’ without ‘d’ = PASSE),
16 Endorse a (endorse a = REASONED) play (= anagram indicator) that’s well presented (REASONED),
17 Sounds like someone is getting through (RINGTONE) to wedding band (RING-) in a manner of speaking (-TONE) (RINGTONE),
19 Votes (votes = SOV-ET) lost (= anagram indicator) around island (-I-) (SOVIET) by old council (SOVIET),
21 One (-I-) foreign politician (-MP-) in Cork (lid = L-ID) (LIMPID) is crystal clear (LIMPID),
23 Shipmaster loses permit (‘shipmaster’ loses ‘permit’ = shas = SASH) for military band (SASH),
24 Cast (cast = ACTS) adapted (= anagram indicator) one of the good books (‘ACTS of the Apostles’ in The Bible).