Across
Withdraw from competition, having a slight injury (7)
Sheltered area where diesel is spilt at end of lane (3,4)
I haven't cracked this one yet — but Fifteensquared have:
DIESEL* + [LAN]E
Could be rasher returning no cab, it seems (4,5)
Former church leader's beginning to be superior (5)
Clumsy American baulks at first jump (4)
I haven't cracked this one yet — but Fifteensquared have:
KLUTZ (American slang for a clumsy person) less its first letter. The Lutz is a type of jump in figure-skating
Rambling around Corinth, seen topless (10)
Mariner finally leaves golf spectators' boat (6)
I haven't cracked this one yet — but Fifteensquared have:
GALLERY (spectators at a game of golf) less [marine]R
Medical officer bags Aussie owls (7)
Egyptian city's stone home in highway that's not deserted (7)
I haven't cracked this one yet — but Fifteensquared have:
SETT (badger’s home) in ROAD less D – reference to the Rosetta Stone , whose discovery led to an understanding of Egyptian hieroglyphs
Flying Gulf Air, one missed out having to use economy (6)
I haven't cracked this one yet — but Fifteensquared have:
Anagram of GULF AIR less I (one)
Rewrote scene or act? Bless! (10)
Some conservatoire backing debauchery (4)
Man the pumps regularly, having finished the lot (3,2)
I haven't cracked this one yet — but Fifteensquared have:
Alternate letters of mAn ThE pUmPs
Oceanarium, not posh, spilt coffee (9)
I haven't cracked this one yet — but Fifteensquared have:
Anagram of OCEANARIUM less U (posh, as in U and non-U)
Pasta course — dip into it! (7)
Vest — and what finishes it off (7)
I haven't cracked this one yet — but Fifteensquared have:
The word vest ends in a SINGLE T. An example of a clue where it would be impossible to get the answer from the wordplay alone On second thoughts, I take back the last sentence – I was confused by the fact that SINGLET also ends in a single T.
Down
Oracle is upset near the top side of lake (5)
I haven't cracked this one yet — but Fifteensquared have:
Reverse of IS + BY (near) + L[ake]. For some reason the girl’s name Sybil is usually spelt with the vowels interchanged
Cheese for girl in bed? On the contrary (7)
Man and dog associated with jug (4)
I haven't cracked this one yet — but Fifteensquared have:
A man’s name, a traditional name for a dog (especially the dog I Punch and Judy) and a type of jug ; technically three definitions, but very closely related
London Taxi: sorry horse (grey): in a race, nobbled (7,8)
Exam — this one makes twelve (6-4)
King under threat turns chicken … (2,5)
… early stone implements working the soil (7)
Sheet anchor? (7,3)
Shipping area, which is proverbially steady on everything (7)
Boy at practice session getting lines! (7)
Old lady's maid is a sizeable American, one needing leading liposuctionist (7)
Tutor rearranged piano quintet (5)
Regularly taking out cloisonné cat (4)
I haven't cracked this one yet — but Fifteensquared have:
Alternate letters of cLoIsOnNé
Type letters or click words in the clue