Across
Worker behind importing quiet device for summoning porter? (8)
Uncover origins of really expensive meat (6)
Make mark in completion of list say with ‘Henry’ (4)
Place where you’ll find Americans misused African oil (10)
Bring down main court statement? Not entirely (6)
Transport worker in company leading a vessel with King on board (8)
I haven't cracked this one yet — but Fifteensquared have:
CO (abbreviation for company), before (leading) A + CAN (vessel = container), containing (with . . . on board) HM (abbreviation for His Majesty the King).
Very serious additional discussion tails off (6)
A lot of criticism about alternative technology still (6)
Popular music genre very French keeping university in delight (8)
I haven't cracked this one yet — but Fifteensquared have:
RAP (popular music genre) + TRES (très = “very” in French), containing U (abbreviation for university). The plural form is odd, but “in raptures” = in a state of delight.
Pressure on large scale around time of digestion (6)
I haven't cracked this one yet — but Fifteensquared have:
P (abbreviation for pressure) + EPIC (slang for on a large scale), around T (abbreviation for time). Relating to the digestive system, as in a peptic ulcer.
Local tenor struggling - something about the throat? (10)
Follow archaeological tourists perhaps becoming glum (4)
Martial art – weak art? Not weak quite wrong (6)
Film director lands first in Europe after securing second (8)
I haven't cracked this one yet — but Fifteensquared have:
SCORES (lands, as a verb = achieves) + first letter in E [urope], containing (after securing = grabbing) S (abbreviation for second). US film director Martin Scorsese.
Down
Others with memory about old American toilet (8)
Rock formation perhaps dry but without phosphorus (4)
I haven't cracked this one yet — but Fifteensquared have:
[p] ARCH (dry, as a verb) without P (chemical symbol for phosphorus).
Body tissue - ponder finding chlorine inside (6)
French director contracted to include element of Elizabethan costume (8)
Outrageous location of circus flags? (10)
I haven't cracked this one yet — but Fifteensquared have:
Definition and cryptic definition. Over-the-top = excessive or outrageous; or flags at a circus would typically be flown above the Big Top (the large tent used for performances).
40% of panel receiving a metal coating (6)
I haven't cracked this one yet — but Fifteensquared have:
The first two letters of five (40%) in PA [nel], containing (receiving) A + TIN (metal). A surface layer that develops with age and handling, especially on metal or wood. If you like the way bronze darkens or copper goes blue-green, you call it patina; otherwise you probably call it tarnish.
China’s excellent Forbidden City? (6)
Membrane’s elasticity accepted? There’s risk about that (10)
I haven't cracked this one yet — but Fifteensquared have:
TONE (elasticity, as in muscle tone) + A (abbreviation for accepted), with PERIL (risk) around it. Relating to the membrane lining the abdominal cavity.
Flying to areas around island like many marine rescues? (8)
I haven't cracked this one yet — but Fifteensquared have:
Anagram (flying) of TO AREAS , around I (abbreviation for island). As in air-to-sea rescue = using an aircraft, typically a helicopter, to rescue casualties from a boat or from open water.
Daughter avoiding tea and coffee inter alia in church - very exclusive (8)
I haven't cracked this one yet — but Fifteensquared have:
LIQUI [d] S (tea and coffee inter alia ), without the D (abbreviation for daughter), inside CH (abbreviation for church). Cliquish = keeping to one’s own private group (clique) and not welcoming newcomers = very exclusive.
Religious book with additional writing on charity (6)
US transport system: inclination to reduce amount up front (6)
Pirate’s associate arriving aboard vessel (6)
Gambling accessories mostly including small coin? (4)
I haven't cracked this one yet — but Fifteensquared have:
DIC [e] (gambling accessories) without the last letter (mostly), including S (abbreviation for small).
Type letters or click words in the clue