Solution to 8D has been deliberately left unsolved and is to be answered only by a non-regular / novice commenter, with proper annotation. Those who have answered earlier in the week, please give others a chance.
Open for anyone to solve, if not solved by 1 PM.
ACROSS
1 They guide drivers parking in new / old Madras (4,4) ROAD MAPS {P} in {O+MADRAS}*
5 Say, one's less sensitive (6) NUMBER [DD]
10 Sleep returning with excellent American wonder drug (7) PANACEA {NAP<=}{ACE}{A}
11 Natural in cargo pants (7) ORGANIC*
12 Get hold of tips from respected elder at Church (5) REACH {Re...d}{El..r}{At}{CH}
13 View with beds in busy places (9) LANDSCAPE {AND} in {PLACES}*
14 Praise Spooner's club attached to the group (3,2,3,4) PAT ON THE BACK (~bat on the pack to pat on the back)
18 How to get to swan from a fictional character (6,6) DOCTOR WATSON {TO+SWAN}* [RA]
21 Previous publication from Cuba excited about Peck movie's climax (4,5) BACK ISSUE {BAC{KISS}U*}{m..iE}
23 Angry individual before judge (5) IRATE {1}{RATE}
24 New block in toilet far back (4,3) LONG AGO {LO{N}{GAG}O}
25 Comprehensive command in bouts chosen regularly (7) OMNIBUS {cOmMaNd+In+BoUtS}
26 Say Sushmita's engaged to get married here (6) SWEDEN {S{WED}EN}
DOWN
1 Soldiers left state (6) REPORT {RE}{PORT}
2 Cancel drawing in a periodical (6) ANNUAL {ANNU{A}L}
4 Intelligent sea creatures may provide this valuable insight? (6,2,6) PEARLS OF WISDOM [C&DD]
6 Eggs on uthappam recipes giving extra smoothness basically (5) URGES Acrostic
7 Arab and an Assyrian wrapping colourful headgear (8) BANDANAS [T]
8 This once more inspects cat's door repairing crooked scratches (8) R?C?E?K? (Addendum - RECHECKS {RECHECK+CATS DOOR}* = CRROKED SCRATCHES [CA] - See comments}
9 What vets maybe doing with pets deteriorating? (5,2,3,4) GOING TO THE DOGS [C&DD]
15 Moving old email - not bad (9) EMOTIONAL {O+EMAIL+NOT}*
16 Britain wholly plugging advantages for different folks (8) ODDBALLS {ODD{B}{ALL}S}
17 Paddle boat manoeuvring oceanic race ultimately (3,5) ICE CANOE {OCEANIC+racE}*
19 Strategic tactic let IBM again put up stores (6) GAMBIT [T<=]
20 The ant's head, oddly drawn (6) TENSED {ThE+aNtS+hEaD}
22 Setter's mature appearance (5) IMAGE {I'M}{AGE}
Reference List
Parking = P, Old = O, American = A, Church = CH, New = N, Time = T, Soldiers = RE(Royal Engineers), Cold = C, Ordinary = O, Old = O, Britain = B
