This crossword No. 11807 clues and answers were published on Wed 12 Mar 2008 and the puzzle can be visited by following The Guardian Quick Crossword No. 11807 link.
All Across Clues and Answers:
1-across – Creative sewing : EMBROIDERY
7-across – Collaborator : QUISLING
8-across – Sob : BLUB
9-across – Smooth : EVEN
10-across – Bewilder : MYSTIFY
12-across – Oscillation : COLONIALIST
14-across – Betrothed : ENGAGED
16-across – Within : AMID
19-across – Bring baby off mother’s milk : WEAN
20-across – Hallucinatory state of wild excitement : DELIRIUM
21-across – Respiration aid : OXYGENTENT
All Down Clues and Answers:
1-down – Radiate : EXUDE
2-down – Companion and biographer of Samuel Johnson : BOSWELL
3-down – Roman poet : OVID
4-down – Leftovers receptacle : DOGGYBAG
5-down – Computer-driven entity : ROBOT
6-down – Help-yourself meal – batter : BUFFET
11-down – Grounded : UNDERDOG
12-down – Invasive corruption : CANKER
13-down – Dip : IMMERSE
15-down – Attach : ANNEX
17-down – Intimidate : DAUNT
18-down – Scheme : PLAN
This crossword has in total 23 where 11 are across and 12 are down.