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:
Felix Ronald Malcolm (Jasper)
Joseph Michael
Louis Thomas Griffin
Maximilian "Max" Richard
Munroe Lyall Philip (Primrose Florence & Autumn Jessie)
Girls:
Clementine Koula Rosalind (Camilla)
Eliza Cecily Rose (Willa)
Eliza Florence (Annabel)
Eliza Jane Martha
Grace Alexandra May
Gracie Clementine Rosa (Ralph Atticus)
Isobel Joan
Isobel Wren
Miriam Teresa
Phoebe
Media Personality Birth Announcements:
[b] Jude Isaiah (Montana Brown)
[b] Jude Maximus (Tiffany Watson)
[b] Jude Xavier (Scarlett Moffatt)
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.