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:
Albert (Mary Anna)
Charles Peter Nicholas
Heath Eugene
Hugo Alfredas Ian
Jamie Alexander (Lara Daisy & Isabel Jane)
Jude Richard (Marcus James & Crispin John)
Jude Simon Thomas
Matthew David James
Rafi Kumar
Rei Oliver (Rio-George & Riku-Harry)
Rory Ian Inigo (Felix)
Sidney William
Girls:
Eliana Grace Jameel "Lulu" (Amara "Ammu")
Lettie Joy
Marianne Blythe (Wilfrid)
Matilda Maria
Olympia Elena
Pia Ebba Gwendolen
Rosabel Elizabeth
Sienna Grace (Ivy Mara)
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.