Across
Departs with booze in barrel (4)
Have a second job - flash working followed by rest (9)
Encores rang out - from this part of church? (11)
Tree bark (3)
Drop off surface (3)
Driven by courage to pin down constant source of feminine attraction? (11)
I haven't cracked this one yet — but Fifteensquared have:
C (=constant, in maths) in [SENT (=driven, propelled) + BOTTLE (=courage, pluck)]
British author showing increasing cunning? (6)
I haven't cracked this one yet — but Fifteensquared have:
As arch means cunning, crafty, becoming archer could be “showing increasing cunning”; the reference is to British author and former politician Jeffrey Archer (1940-)
Theatrical magician favouring twirling ropes (8)
Nonsense writer penning start of poem getting positive response - a regular occurrence (8)
I haven't cracked this one yet — but Fifteensquared have:
[ P <oem> (“start of” means first letter only) + YEA (=positive response, affirmative vote)] in LEAR (=nonsense writer, i.e. Edward Lear and his nonsense verse); since it happens once every four years, a leap year can be described as “a regular occurrence”!
English person unwelcome overseas? Smile and depart (6)
Jack losing heart in summer is conflicted accepting university later - the attraction of Amsterdam? (11)
I haven't cracked this one yet — but Fifteensquared have:
U (=university) in *( J <ac> K + SUMMER IS); “losing heart” means middle letters are dropped from anagram, indicated by “is conflicted”; the Rijksmuseum is a much-visited art museum in Amsterdam
Not entirely compassionate relationship (3)
I haven't cracked this one yet — but Fifteensquared have:
KIN <d> (=compassionate, gentle); “not entirely” means last letter is dropped
Function needing no initial skill (3)
I haven't cracked this one yet — but Fifteensquared have:
<p> ART (=function, role); “needing no initial” means first letter is dropped
‘Style’ included in version of a normal description of Queen? (11)
I haven't cracked this one yet — but Fifteensquared have:
CHIC (=style, fashion) in *(A NORMAL); “in version of” is anagram indicator
Additional people arrived besieging British coastal resort (9)
I haven't cracked this one yet — but Fifteensquared have:
B (=British) in [MORE (=additional people) + CAME (=arrived)]; Morecambe is a UK coastal resort in Lancashire
Astute in the old way (4)
I haven't cracked this one yet — but Fifteensquared have:
wise is an archaic (“old”) word for way, manner , as in in any wise
Down
Poor Scots upset about good dress (5)
I haven't cracked this one yet — but Fifteensquared have:
G (=good) + PUIR (=poor Scots, i.e. a Scots word for poor ); “upset” indicates a vertical reversal; to rig up is to dress or equip
One’s trapped in large unknown religious building (9)
I haven't cracked this one yet — but Fifteensquared have:
A in [MONSTER (=large, mammoth, used adjectivally)+ Y (=unknown, in algebra)]
Friend increasingly a mess after one leaves (6)
Certain to abandon Society after blatant offer (8)
Language school in Gothenburg offering a restricted range (5)
Intermediary grand one working to secure venture supported by our group (9)
Herbal flavouring not currently for you and me (5)
Wesley say to lose relish we hear for Pope’s name (8)
I haven't cracked this one yet — but Fifteensquared have:
JOHN (=Wesley, say, i.e. the English Methodist leader) + homophone (“we hear”) of (to) pall =to lose relish, become vapid; John Paul has so far been the name of two Popes
Actor with judo moves getting religious role? (9)
Playwright’s written about offender’s handicraft (9)
I haven't cracked this one yet — but Fifteensquared have:
CRIM’S (=offender’s, i.e. criminal’s) in SHAW (=playwright, i.e. George Bernard Shaw, from Ireland); scrimshaw is a sailor’s spare-time handicraft, such as carving fanciful designs on shells, whales’ teeth, etc
Irish nationalist once on revolutionary lines (8)
Tree left above a stream? I’m not sure (8)
No choice in limitations on game for former King (6)
I haven't cracked this one yet — but Fifteensquared have:
The “limitations, i.e. first and last letters, on g am e ” are GE, so if the choice is between “GE or GE”, then there is “no choice”!
Quantity of paper covering lecturer’s field of study (5)
Whole account identifying Middle Eastern shrub (5)
Is no longer addicted to excitement (5)
Type letters or click words in the clue