Across
Contest German head of Nando's leaving mushrooms in (12)
Hurt leg and backside in machinery leading to sympathy (7)
I haven't cracked this one yet — but Fifteensquared have:
HARM (hurt) + ON (in cricket terminology = leg = the side of the wicket where the batter stands) + last letter (backside) of [machiner] Y . A slightly awkward definition, but to be in harmony / sympathy with someone = to share their opinions or aims.
Made Charlie shake less with drugs primarily (7)
I haven't cracked this one yet — but Fifteensquared have:
C (Charlie in the radio alphabet) + [w] OBBLE (shake) after removing the W (abbreviation for with) = “less with”, then the first letter (primarily) of D [rugs]. Cobble, as a verb = to make [shoes], or to put something together in a clumsy or makeshift way (more usually “cobble together”).
The first woman to criticise young explorer (7)
US city flooded by great lake beginning to suspect goddesses of vengeance (7)
I haven't cracked this one yet — but Fifteensquared have:
NY (abbreviation for New York = US city), contained in (flooded by) ERIE (one of the Great Lakes in North America) + first letter (beginning) of S [uspect]. More Greek mythology.
Outspoken characters representing South American writing (5)
Amphibian for example on back of crocodile for a bit (9)
I haven't cracked this one yet — but Fifteensquared have:
TOAD (an amphibian) + EG (abbreviation for Latin exempli gratia = for example) + RE (on = on the subject of) + last letter (back) of [crocodil] E . A bit = to a degree = partly, not completely.
Pulls on holiday in racing facility (9)
Patent Uncle Arthur's masks (5)
Corrupt official in place ending in tyranny (7)
I haven't cracked this one yet — but Fifteensquared have:
REF (short for referee = sports official), between PUT (place, as a verb) + end letter of [tyrann] Y .
With legs either side of Scandinavian woman start to empathise (7)
I haven't cracked this one yet — but Fifteensquared have:
ASTRID (a female given name in Scandinavian countries) + starting letter of E [mpathise].
Study plugs and other things with no teeth (7)
I haven't cracked this one yet — but Fifteensquared have:
DEN (study = a private room) inserted into (plugging) ET AL (abbreviation for Latin et alii = and others).
Extremely snide comment under the breath in coastal area (7)
I haven't cracked this one yet — but Fifteensquared have:
End letters (extremes) of S [nid] E + ASIDE (in theatre, a line spoken “under the breath” and supposedly not heard by other characters).
Use envelopes unexpectedly prepared in advance (12)
Down
Symbol like an apostrophe from Cornwall mostly over breaks (7)
I haven't cracked this one yet — but Fifteensquared have:
CORNIS [h] (from Cornwall) without the last letter (mostly), with O (abbreviation for over, in cricket scoring) breaking into it. A symbol used in Greek writing where two vowels in adjacent words have been merged into one.
Third piece of meat with mint gravy but no stuffing brings expression of regret (7)
I haven't cracked this one yet — but Fifteensquared have:
Third letter of [me] A [t] + POLO (brand name of a mint = peppermint-flavoured sweet) + G [rav] Y without the inner letters (stuffing).
Month with clergyman for Spooner's financial officer (9)
I haven't cracked this one yet — but Fifteensquared have:
As the Reverend Spooner might have pronounced MAY (a month) + PASTOR (clergyman).
Where chalk may be found when needed (5)
Replacement fruit is majestic (7)
Extremely cheap film service provided by the BBC? (7)
I haven't cracked this one yet — but Fifteensquared have:
1P (one penny = extremely cheap) + LAYER (film = a thin layer on a surface). The BBC’s video player service.
Girl power? Girl's daughter's power? That is making traditional British dish (12)
Hell on earth having husband promoted? Need to change being crestfallen (12)
Outrage about break-ins oddly ignored in assessment (9)
I haven't cracked this one yet — but Fifteensquared have:
APPAL (outrage, as a verb = to shock), around [b] R [e] A [k-] I [n] S with the odd-numbered letters ignored.
An idiot making port in Belgium (7)
Make more agreeable number after second number one (7)
I haven't cracked this one yet — but Fifteensquared have:
TEN (a number), after S (abbreviation for second) + WEE (number one = slang for an act of urination).
American discounted appealing to cop traitor (7)
Building completed if I certified walls (7)
Calls island on Shetland to begin with (5)
I haven't cracked this one yet — but Fifteensquared have:
YELL (island, one of the North Isles in Shetland, off the northern coast of Scotland) + beginning letter of S [hetland]. I don’t think Shetland is doing double duty because “island” is enough to define Yell. “On Shetland” is a little odd because Shetland isn’t a single island but an archipelago; “in Shetland” would be more natural.
Type letters or click words in the clue