This crossword No. 14903 clues and answers were published on Mon 12 Feb 2018 and the puzzle can be visited by following The Guardian Quick Crossword No. 14903 link.
All Across Clues and Answers:
1-across – Despicable : ABJECT
4-across – Dissertation : THESIS
9-across – Japanese code of chivalry : BUSHIDO
10-across – Angry frown : SCOWL
11-across – Air-filled cavity in one’s head : SINUS
12-across – Pine leaves : NEEDLES
13-across – Deposit : DOWNPAYMENT
18-across – eg Carles Puigdemont : CATALAN
20-across – Japanese cold rice dish : SUSHI
22-across – Contagious viral disease : MUMPS
23-across – Unnatural sounding and overformal : STILTED
24-across – Dead : NOMORE
25-across – Cheap and nasty : SHODDY
All Down Clues and Answers:
1-down – Waylay : AMBUSH
2-down – Leader of the Argonauts : JASON
3-down – Deep red : CRIMSON
5-down – Rushing : HASTE
6-down – Distended : SWOLLEN
7-down – Big media display — bellyflop effect : SPLASH
8-down – Rowan : MOUNTAINASH
14-down – Very best : OPTIMUM
15-down – Redeemer : MESSIAH
16-down – Shrewdness : ACUMEN
17-down – Noon : MIDDAY
19-down – Light amplification by stimulated emission of radiation : LASER
21-down – Located : SITED
This crossword has in total 26 where 13 are across and 13 are down.