4068 364 263 by Xanthippe

What looked like a difficult puzzle from Xanthippe had a fairly easy denouement. A carte blanche grid with letters-latent clues had to be tackled. The letters removed from answers gave the message MOBILE PHONE at the bottom. Down the side the word PREDICTIVE with the answer TEXT gave the clue to solving the code in the preamble. Gregson used his mobile phone to find that the solution was – ‘Join centres of consecutively numbered cells with curves and complete the shape using two straight lines. A three word slang phrased must be written under the grid.’
Following these instructions a shape appeared that could be a bone or a phone. The title when decoded gave DOG AND. Although Gregson could not find it in Chambers the rhyming slang for a telephone is widely known. The slang phrase is DOG AND BONE.

Across
No longer save old poem about singular cruel person (6)
SADIST SA’ + S (singular) in DIT
Bristle about page partitions (4)
SEPTA P (page) in SETA
Bloodthirsty person knocking out German row of guns (3)
TIDER TIGER less G (German)
Suitably large behind advanced forward in scrum (7)
APROPOS A (advanced) + PROP + OS (large)
Times' editor's first to clear ... (5)
ERASED ERA’S + ED
... computer memory storing electronic overflow (3)
REAM E (electronic) in RAM
US schoolgirl taking in English church, forcibly urged on (6)
COERCED E (English) + RC in CO-ED
Energy wasted in risqué investigations (8)
ENQUIRIES E in Anagram IN RISQUÉ
Destroy end of fine chapter during broadcast (8)
ERADICATE (fin)E + C (chapter) in RADIATE
Twin left in sporty car -- old Ford model (6)
COUPLET L in COUPÉ + T (ref. Model T Ford)
Judge acquitting Frenchman after one French impression (3)
IDÉE I (one) preceding DEE(m) less M (monsieur)
Ad-men are reluctantly holding back broadcast again (5)
RERAN hidden reversed
Mixed atomic semiconductor light source doped with lanthanum and yttrium (7)
ALLAYED A (atomic) + LED containing LA (lanthanum) + Y (yttrium)
Alter cut end of lace, about a yard? (3)
VARE VAR(y) + (lac)E
Tense UK retailer shunning new lines (4)
TEXT T (tense) + (N)EXT (ref. NEXT stores)
Cast aside on deck (6)
ADONISE Anagram ASIDE ON
 
Down
Guide with base moved down on printer's plate (5)
STEREO STEER (moving E (base) + O (on)
Nipper up north, warm and dry, sheltered by baron (4)
BAIRN AIR in BN (baron)
Perfect croupier's statement? (4)
IDEAL I DEAL
Principally sculptured pieces on large marble (9)
ESPECIALLY Anagram PIECES + ALLY
Prop primarily supporting one edge of hide? (4)
SHORE S(upporting) + H OR E (both edges of HIDE)
Pet hooker with whip (6)
TOMCAT TOM (prostitute) + CAT (whip)
Consumer outside is from the Orient (5)
EASTER ‘S in EATER
Rep (?) requested goods before they were available (9)
PREORDERED REP when ordered is PRE!
Scandinavian trumpet is leading smooth musical effect (4)
SLUR ‘S (is) before LUR
Simpleton spent dole on some pasta (6)
NOODLE Anagram DOLE ON (2 definitions)
Greenish, endlessly twitching, eyes (4)
EINE Anagram (gr)EENI(sh)
High spirited editor's leaving, absorbing constant applause (5)
ÉCLAT ELATED less ED containing C (constant)
Eagles are lifting incomplete shelter (5)
ERNES ‘RE reversed + NES(t)
Penny cut section from smallest fold (4)
PLEAT P (penny) + LEAST less S (section)
Elderly relative with hole in the heart complaint (4)
GROAN O (hole) in the centre (heart) of GRAN
Box releasing phosphorus in type of nerve gas (4)
SARIN SPAR less P (phosphorus) + IN