No 11546, Monday 09 Nov 2015, Buzzer

ACROSS
1   Take a break during speech (5) WREST (~rest)
4   Excellent article in paper on Italian wine clubs (9) FANTASTIC {F{AN}T}{ASTI}{C}
9   Exploit described one and provided backing to be regarded as god (7) DEIFIED {DE{1}{FI<=}ED}
10 Becoming aware of ruler imprisoned immediately (7) KNOWING {K{NOW}ING}
11 Need month in rehabilitation for improving (2,3,4) ON THE MEND*
12 Four brightly coloured fish (5) TETRA [DD]

13 Cricketer about to glance again (6) KEEPER <=
15 My word is a credit for Pygmalion perhaps (2,6) BY GEORGE [DD]
18 Family tree fiance’s trying to keep under wraps (8) ANCESTRY [T]
19 Heroic man losing heart and head (6) LEADER LEAnDER
22 Greasy and old food shop's revolting (5) OILED {O}{ILED<=}
24 Force prepare to go after criminals (9) CONSTRAIN {CONS}{TRAIN}
26 Deal to break down (4,3) GIVE OUT [DD]
27 Sign of prosodic composition lacking depth (7) SCORPIO PROSOdIC*
28 Starting to grin, nun is in fits (7,2) TURNING ON*
29 Mathematician's base formula right in the end (5) EULER {E}{(-r)ULE(+r)R}

DOWN
1   Day and time set aside initially for marriage (7) WEDLOCK {WED}{cLOCK}
2   Be second to enter flight (5) EXIST {EXI{S}T}
3   Banality of cultivating interests (9) TRITENESS*
4   More rum following fine food (6) FODDER {F}{ODDER}
5   Perhaps a key need for seer (5,3) NAKED EYE*
6   Fuss over exercise to follow (5) ADOPT {ADO}{PT}
7   Whistled and expressed joy nabbing wicket (9) TWITTERED {W} in {TITTERED}
8   Parts of beguine, tango, cha-cha on reflection, of the same kind (7) COGNATE [T<=]
14 Old church fan put in the shade (5,4) EXCEL OVER {EX}{CE}{L OVER}
16 Chosen baton essential for orchestra conductor (9) ELECTRODE {ELECT}{ROD}{orchEstra}
17 Total cost of putting in place carpeting that's not new (5,3) PRICE TAG CARPETInG*
18 Anxiety gripping doctor in between (7) AMONGST {A{MO}NGST}
20 Hard feelings gushed out on date briefly (7) RANCOUR {RAN}{COURt}
21 United Nations exists, working for harmony (6) UNISON {UN}{IS}{ON}
23 Menswear offered hot Indian clothes (5) DHOTI [T]
25 Offend a stammering friend? (5) APPAL {A}{P-PAL}

GRID