Across
Accomplished lines about a comprehensive (7)
I haven't cracked this one yet — but Fifteensquared have:
An envelope (‘about’) of ‘a’ in OVER (‘accomplished’) plus LL (‘lines’).
Settled on entering working party (7)
Career that's stimulating (5)
Choked elongated fish perished (9)
Symbolic 5 includes guitar riff (10)
Detailed description of small muscle (4)
Anniversary bash outside eastern entrance out of control (12)
Guardian articles on Republican political group that heralds a storm? (7,5)
I haven't cracked this one yet — but Fifteensquared have:
A charade of WE (‘Guardian’) plus A THE (‘articles’) plus R (‘Republican’) plus FRONT (‘political group’).
State service (4)
Drink that in Spanish means 'island' (10)
Umlaut scrawled over man's name; accept it or else! (9)
Brother gets over Dutch scam (5)
Sought to circulate around river's low points (7)
Ostentatious as kids in a puddle? (7)
Down
Loss, if York houses become fixed (6)
Go grey, perhaps, after near death (6)
European football team abroad clear end by half-time (10)
Fair's awkward situation: no parking (5)
US state split by ex-monarch's notary (9)
America's holding of heaven-bound heavenly objects (4)
Drumming sound coming from grass on a plot (8)
Performed turn on ends of rickety stool, being two-toed (8)
Significant base in Gulf conflict (10)
I haven't cracked this one yet — but Fifteensquared have:
A charade of MEAN (‘base’) plus ‘in’ plus GFUL, an anagram (‘conflict’) of ‘Gulf’.
Versace, not busy, dropping round to see writer (9)
I haven't cracked this one yet — but Fifteensquared have:
An anagram (‘busy’) of ‘Versace n[o]t’ minus the O (‘dropping round’).
Feel dizzy taking diamonds, say, for beachwear (8)
Wrong time and time again — love rather strained (8)
I haven't cracked this one yet — but Fifteensquared have:
A charade of FALSE (‘wrong’) plus TT (‘time and time again’) plus O (‘love’).
Matches squeal when lit (6)
Implacable insensitive heartless sexual partner (6)
I haven't cracked this one yet — but Fifteensquared have:
A charade of DEAD (‘insensitive’) plus L[a]Y (‘sexual partner’) minus the middle letter (‘heartless’).
Newspaper 'X'? (5)
Type letters or click words in the clue