Across
Bring back the birch? This process might achieve it (15)
Heavenly girl left, crossing end of village street (9)
I haven't cracked this one yet — but Times for the Times have:
[villag]E ST in CELIA L
Welshman's old farm cart (5)
I haven't cracked this one yet — but Times for the Times have:
O WAIN
Share most of Latvian meat portion (6)
Throttle criminal finally overcome by rum (8)
I haven't cracked this one yet — but Times for the Times have:
[crimina]L in STRANGE
Pitch tents in French park, principally by river (6)
I haven't cracked this one yet — but Times for the Times have:
EN (‘in’ in French) CAM (river that runs through Fenland Poly) P[ark]
Characteristic belongings (8)
Rule made by party in connection with flunky (8)
Cut capers, initially like one in short dress (6)
I haven't cracked this one yet — but Times for the Times have:
L[ike] I in FROC[k]
Bridge-player heads for park area walking boxer (8)
I haven't cracked this one yet — but Times for the Times have:
SOUTH (bridge player) initial letters (heads) of Park Area Walking
Gloomy sergeant major wearing ring (6)
A legal right for a foreigner (5)
Oddly it blooms without resistance in a volcanic island ( (9)
I haven't cracked this one yet — but Times for the Times have:
R in anagram* of IT BLOOMS
Preferring to sit, nevertheless (15)
I haven't cracked this one yet — but Times for the Times have:
if you prefer to sit, you are not with (in support of) standing; moving right along…
Down
Prepare to make further use of army corps transport (7)
Distribute a complete set of religious books (5)
His catch originally flourished in a type of tank? (9)
Bar wading bird (4)
Reclusive tailor working in outskirts of Sydney (8)
I haven't cracked this one yet — but Times for the Times have:
TAILOR* in S[ydne]Y
As some would say, a deeper-sounding greeting in Honolulu? (5)
A speaker may deliver it during month on Russian river (9)
Athlete blowing top in US city convent (7)
Leftist composed music, not including Mass (9)
A simple fellow, perhaps, gathering last of firm fruit (9)
I haven't cracked this one yet — but Times for the Times have:
[fir]M in PER (a) [Simple] SIMON
Dialect Swiss primarily used in Catholic church (8)
I haven't cracked this one yet — but Times for the Times have:
S[wiss] in ROMAN (Catholic) CH (church)
Verbally scorn Scandinavian, showing contempt (7)
I haven't cracked this one yet — but Times for the Times have:
if you diss a Dane, you show contempt for her/him/them etc. etc.
Worn out, overwhelmed by extremely challenging vocation (7)
I haven't cracked this one yet — but Times for the Times have:
ALL IN (worn out) in C[hallengin]G
Husband going over a most important Asian capital (5)
I haven't cracked this one yet — but Times for the Times have:
H A NO I (number one, AKA most important)
I wander to north, finding indigenous people (5)
I haven't cracked this one yet — but Times for the Times have:
reversal of I ROAM; not uncommon wordplay for these folk
UK national acted effectively, securing runs (4)
I haven't cracked this one yet — but Times for the Times have:
R in BIT; Collins has ‘act effectively upon’ for bite; one can imagine a gear cog biting perhaps
Type letters or click words in the clue