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:
Arthur Basil Stuart
Cameron (Jamie, Nicole & Olivia)
Charles William Owen
Cosmo John Benedict
Dylan George (Theo Guy)
Freddy Leo
Jack Christopher (George Arthur)
Joshua Harvey
Maximilian Aimé William
Rafi (Mila)
Rami David
Girls:
Amber Willow (Flora Grace)
Arabella Charlotte (Alicia Grace)
Arabella Rae
Astrid
Bella Sofia Lizanne
Constance Grace Rose (Rowland Arthur Morgan)
Esme Willow Jane
Evie
Fiona Margot Amelia
Jemima Aurelia
Madeleine Jayne
Remi Starling
Savannah Avery (Aria & Lucian)
Suki Cecil Brydon (James Cecil Seager)
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.