The unclued lights (two must be paired) are of a kind, verifiable in Brewer.
 

Across

10   Details from Britain forged (4)
12   Colour of monster coming to grips with awfully vile demise, almost (10, two words)
14   Mother isn’t me or her, we’re told (3)
15   Offering a sleep before dance (8)
17   Trousers covering pants (5)
18   On the throne, expecting to be beheaded (7)
19   Quiet Lett disturbed Jewish community in Eastern Europe (6)
22   False tears affected Zulu (6)
24   Country is popular returning help (5)
26   Support from Labour leader on committee (9)
29   The French greeting and farewell (5)
31   Scots hungry for source of the ‘black drink’ (6)
36...