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 William "Alfie"
Apollo Raphael Piet
Arthur George
Cassian Benjamin Bertram
Daniel Simon
Ferdinand Guy (Leo Henry)
Hugh Bowen (Georgina Marguerite)
James Bertram Arthur (Edward Horatio Derrick)
Max Oliver (Scarlett Megan)
Miles Jack (Scarlett Grace)
Ralph William Beau
Stanley Wilfrid
Toby Hugh Philip
Willoughby Rupert Blyth (Theodore Alexander Frederick)
Girls:
Angèle Valentina
Artemis Leopoldina
Athena
Eska (Logie & Milo Hal Flint)
Fiadh Mae Frances (Rex)
Isla Charlotte (Alexander)
Willa Rose (Leo Oliver)
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.