2412: Transponders

It is the centenary of a daring feat. Unclued lights (two of two words) include two surnames, two locations (two pairs) and the aptly positioned name of a key item (a pair). Ignore an apostrophe.
 

Across

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Martin Narey

How I was punished for breaking the conspiracy of silence on grooming gangs

1    Matronage almost outraged Lily (8)
6    Appear briefly and go quietly (4)
12    Toolmaker out of Alaska playing musical device (7)
14    Pot of water bishop dropped (3)
15    Who’s there in support keeping goal? (8)
17    Some fear the dirt (5)
18    Saint introduces tiny cardinal to honey (7)
19    Extended family with Chinese aunts and uncles primarily (6)
22    Brilliant back passed the ball (3)
27    Peg West loves Denys Crook (9, two words)
29    To outtalk everyone else is extreme (9)
31    Denials from head in speech (4)
32    Miss X ignored Balanchine when dancing (7)
35    A few soldiers dumping earth in old shaft (3)
38    Inferior trinket on hire? (6)
40    Doctor enters meadows which aren’t ploughed (7, hyphened)
42    Lass tense in deficient canoe (5)
43    The Bard’s twin turned corrupt and profaner (8)
44    Chaps endlessly drink (3)
45    Clowns astride African asses (7)
47    Former head leaves Britain (4)
48    Blue patients beginning to seize up (8)
 

Down

2    Inky art works are ridiculous (10)
3    Wrong one’s twisted (7)
4    Snap of German war artist (5)
5    Siberian tree swelling inside (6)
6    Antebellum sportswear tinkers toss out (6, hyphened)
7    Port Doc still imbibes (5)
8    Joy’s squint (4)
11    People boxed on business  a trying job? (8, two words)
16    Character maybe copper removes outside (3)
19    Ropy raw material a mate ditched in northern borough (6)
20    Newsgroups in the States reflected anger (6)
21    Hospital equipment may need bit renewed (10, two words)
24    Hyperion’s girl nameless a very long time (3)
26    Unlucky Ozzie crook G-man takes in (8, hyphened)
28    Camel underdone in Mac’s cooker (3)
30    Two ignorant...