York S & B 24th Oct 2025 by Platypus

([Perestroik]a is sur[e])<. I'm not sure if you could call it an &lit since "here" isn't part of the wordplay. You could perhaps describe it as partial &lit because the rest of the clue helps the definition.

Starmer* around o[pposition]

(Campsi[t]es)*(last letter of [abou]t removed)

Every third letter of "ought apples or grapes"

Go diva(=words of encouragement for leading female)

CD, as December includes Christmas Day when presents are given.

(G[rea]t niece)*(discontented = contents removed)

Clues* around SI

(Inner [s]ole)*. Leather is the anagram indicator with s{mall} removed(=hidden) in the letters.

Scam(=do, as in con someone) + p(=papa in phonetic alphabet) + I. Scampi is a possible dinner, so requires a question mark.

[F]la[t](=the body/inside bit of flat) + ([c]i[d](=discovered i.e. remove covering) inside rat(=creep)). A lariat is a sort of lasso.

(C[onvicted] k[idnapper] + do(=party)) in low N{ewton}(abbrev from the SI Unit of force)

I'm not a great music expert, but it seems to be the sol-fa equivalents of the alphabetical notes in the key of C major, so=G, me=E, B=ti, E=me.

Ka(=Egyptian spirit) + RPO + v(=against). I had to look at the solution to find out what RPO is about but apparently it's an abbrev for Royal Philharmonic Orchestra(=renowned players).

S[t]uds. I've not come across suds before but it seems to a slang term for beer and also seems to be used in the brand names of some American beers.

A and E(=casualty) around statin(=a cholesterol lowering drug). At is the chemical symbol for astatine, an extremely rare and unstable member of the halogen group of elements.

G[uidance] in ([whe]n aviation).

Dry around made*. A dramedy is a mixture of drama and comedy, so would have some variety.

Ban(=disqualification) + g{rand}

Eminem(=rapper) with in replaced by b{ass} l{ine}

(Ras T[afari])<

Co{mpany}< + [m]ean[s]

Aces<(=nails, as in "I've nailed/aced it") in cheek(=brass in the sense of having the brass to do something) + [satellit]e

Qui(=French for who) in EP(=extended play record, which possibly could be called a single, although EPs could contain more than one song)

Hidden in "Ernest and ardently"

Ye<(=old word for the) after troll(=ugly dwarf). The def lost me completely but apparently it's an acronym of "British Rail Universal Trolley Equipment", a type of trolley used on the railways for handling newspapers, mail etc.

Looter with the second(=latest) O replace by I(=the setter)

M[ushroom] in (a OK(=well as an adjective))

[Spli]t on rio[t]

Who(=which person) + a[lights]