Below is a round-up of the birth announcements from British newspapers. Sources include a national paper (The Telegraph, The Times) and a broad range of local newspapers from across England, Wales, Scotland and Northern Ireland.
Sibling names are in brackets. No official surnames are included; any name ending in a surname is actually a middle name.
Boys:
Alfred George Augustus (Henry)
Alfred Magnus Dunbar (Bear)
Arthur Thomas Lacy
Atticus Oliver Bear
Bertram Nicholas
Ivo William
Michael "Misha" (Edward "Eddie" Terence & Dylan Phoenix)
Milo Antonio Roy
Noah (Lydia)
Girls:
Alaiya Jay
Eve Sophia
Jemima Rowen
Nancy Frances Jessica (Jago)
Ottilie Grace
Romy Iris Charlotte (Wilfred Laurie Nicholas; half-sibs: Lara Lettice, Milo Arthur, Cassia Peaches & Theodore Apollo; Stephanie) -- daughter of Prime Minister Boris Johnson
Violet Peggy Vera (Florence)
I cross-reference older BAs to find the full names of the siblings, however often they are missing (especially the eldest siblings, or for half-siblings) which explains why you will sometimes see something like: George Henry (Lucy, Emma & Jack Arthur). "Lucy" and "Emma" may well have middle names as well; I simply cannot find them online.