Welcome to our new setter Prasenjit. Those from CCS at Facebook will know him.
Three answers per commenter (with annotations) till 6 PM.
ACROSS
7 Placard
announced periodic function (4)
8 Key
valuation after mortgage payment results in relocating (10)
9 A delay held up festivity (4)
10 Award for Singapore or the Vatican
without yes or no? (8)
11 Originally, I sermonise main doctrine
(3)
12 Sarawak Indians, in essence, related by
blood (4)
13 Crisis - Russia is mounting eastern
attack, sources state (6)
14 Stalemate in relationship (3)
15 Open a cylinder (4)
16 Plateau found in some sandy terrain (4)
17 Each reversed exercise iteration (3)
18 Back in prison robe (6)
20 Faction supporting extreme cultural
traditions to begin with (4)
22 Consume prime servings of feast (3)
23 See 16 Down (8)
25 Bimetallic missile? (4)
26 Skeleton in a lab turns around, circles
twice and creates uproar (10)
27 Colour oozing from dilute crude (4)
DOWN
1 Seize reportedly
intoxicated sailor (6)
2 What a dentist
gives and a consultant gets (8)
3 After Nov,
storage company faces liquidation (10)
4 (& 21 Down)
At server farm (4,6)
5 Lash the Italian
immersed in soulless music from the East (6)
6 Looking back
within, had negative feelings about the program (6)
10 Immediacy
overwhelms second-rate hero (9)
13 Colour of copper
tetrachloride for example (10)
16 (& 23 Across)
Deny it! It helps defend against eyewitness testimony (8,8)
18 Bromide content
of organic lichen (6)
19 Delicate
ingredient of coffee blend (6)
21 See 4 Down (6)
24 Russian monarch
taken in head over heels by Barbra Streisand (4)
The interactive Across Lite version will no longer be embedded in the main post. It is available at the following link PS 1
Enjoy.
