Across:
1 Pass one’s days like lassie (pass one’s days like Lassie/the dog = LEAD A DOG’S LIFE) in meadow (LEA-) near delta (-D) having miserable existence (A DOG’S LIFE) (LEAD A DOG’S LIFE),
10 Yours truly (me = -EM-) in Seine (Seine = EN-IES) swimming around (= reverse indicator) (ENEMIES) with those from the other side (ENEMIES),
11 Hot-blooded (INTENSE) popular (IN-), vocal (= homophone indicator) circus types (‘tents’ = ‘tense’ = -TENSE) (INTENSE),
12 EPO (DRUG) for runner (-RUG) after (= position indicator) starting decathlon (starting ‘Decathlon’ = D-) (DRUG),
13 Dreadful (= anagram indicator) ulcer (ulcer = CRUEL) is more than one can bear (CRUEL),
15 Captain (captain = LEAD) on all sides today (LEAD on all sides of today’s grid),
17 Close (END) what’s caught up (= reverse indicator) in mixed nerve (in ‘mixeD NErve’ = dne = END),
19 Without a leader (m), mob (‘mob’ without ‘b’ = OB-) watched (-EYED) (OBEYED) and followed (OBEYED),
21 Crazy (mad) about (= reverse indicator) (mad = DAM-) relative (-SON) (DAMSON) in a jam (DAMSON),
22 Something for those crying out (TISSUES) for car (model T-) for lots of children (-ISSUES) (TISSUES),
23 Motorway (-M-) parking (-P-) in this country (E-IRE) (EMPIRE) is big business (EMPIRE),
25 Revulsion (NAUSEA) of foundation in Rockhampton (foundation in ‘rockhamptoN’ = N-), Australia (-AU-) close to coral, for example (Coral -SEA) (NAUSEA),
27 Nick (gash) isn’t finished (h) (‘gash’ without ‘h’ = GAS) with fossil fuel (GAS),
29 Metal (IRON) dug up (= reverse indicator) in Arno River (in ‘arNO RIver’ = nori = IRON),
30 Chips in (HELPS) starters of English Lamb (starters of ‘English Lamb’ = -EL-) covered in HP (HP = H-P-) sauce primarily (‘Sauce’ primarily = -S) (HELPS),
31 Local businessman (locally/informally ‘businessman’ = SUIT) mad to get out of stadium (‘mad’ to get out of ‘stadium’ = stiu = SUIT),
34 Roughly out of control (VIOLENT) in Rocky? (= anagram indicator) Not Levi! (not Levi = VIOLENT),
35 Dove missed by video camera (‘dove’ missed by/ not in ‘video camera’ = icamera = AMERICA) in the country (AMERICA),
36 Force someone to go (LEAD BY THE NOSE) with Heavy Metal (LEAD) – when the time arrives (by then = BY THE N-) – Ozzy on lead (‘Ozzy’ on lead = -O-) opens singer’s eyes (opens ‘Singers eyes’ = -SE) (LEAD BY THE NOSE).
Down:
2 Former (EX-) sweetheart (‘swEet heart’ = -E-) is appealing (-CUTE) (EXECUTE) to put it into effect (EXECUTE it),
3 No objections in job description (no ‘objections’ in ‘job description’ = drip = DRIP) that requires a plumber (DRIP),
4 Strong wish (DESIRE) to brief (k) bureau (‘desk’ without ‘k’ = DES-) representing Ireland (-IRE) (DESIRE),
5 Went up (went up = GAINED) to some bodega in edifice (some ‘bodeGA IN EDifice’ = GAINED),
6 It’s after the deadline (LATE) for both sides in labour dispute (both sides in ‘ LAbour dispuTE’ = LATE),
7 Singles out (FINGERS) what’s no good (no good = -NG-) in stir- (= anagram indicator) –fries? (fries = FI-ERS) (FINGERS),
8 Convince someone (LEAD TO BELIEVE) to provide an introduction the man upstairs (provide an introduction the man upstairs/God = LEAD TO BELIEVE),
9 Corrupt (LEAD ONE ASTRAY) leaders entertaining atrocious (leaders ‘Entertaining Atrocious’ = -EA-) Mafia leader (Don = -D ON-) from Orient (East = -E AST-) with resistance (-R-) in place (lay = L- -AY) (LEAD ONE ASTRAY),
14 Way out (UNUSUAL) for a foreign (a = UN-) regular (-USUAL) (UNUSUAL),
16 Ran into (ran into/ met = MET-) heads of regulatory enforcement (heads of ‘Regulatory Enforcement’ = -RE) (METRE) from The Yard, for example? (the yard = c. METRE),
18 Graduate (BA-) starts to scrape a living (starts to ‘Scrape A Living’ = -SAL) (BASAL) at the lowest level (BASAL),
20 Check out (DIE) characters embraced by rising (= reverse indicator) matinee idol (characters embraced by rising ‘matineE IDol’ = eid = DIE),
21 “Lice is not in decline” (‘lice’ is not in ‘decline’ = dne = DEN) – study (DEN),
24 Rugby player (PROP-) opens other sportswoman’s eyes (opens ‘Other Sportswomans Eyes’ = -OSE) (PROPOSE) with offer (PROPOSE),
26 Labour (= anagram indicator) suited (suited = STUDIE) to endless (end ‘lesS’ = -S) (STUDIES) offices in The House (STUDIES),
27 Technologically gets rid of alcoholic (‘technologically’ gets rid of ‘alcoholic’ = tengly = GENTLY) gradually (GENTLY),
28 Place (-PL-) in military band (sash = S-ASH) (SPLASH) for display that’s newsworthy (SPLASH),
32 Ground elder (‘ground elder’ is a common weed of the parsley family = WEED) sides with design review (sides with ‘DEsign reviEW’ = deew = WEED) going all the way back (= reverse indicator) (deew = WEED),
33 Penny-pinching (MEAN) banks around Mediterranean (banks around ‘MEditerraneAN’ = MEAN).