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:
Angus William
Edward Henry Felix (Bertie & Jemima Margaux Cordelia)
Frederick Oliver Theodore "Freddie"
George Andrew (Alice Marie Raphaelle & Leonore)
Hector Charles
Kester Francis
Theodore Mathew
Woodrow Loup Georges "Woody" (Monty & Cosma Lucy Françoise)
Girls:
Clementine Elizabeth
Eva Juliette
Freya
Ida Ottilie
Lara Carolyn Elisabeth (Albert)
Mila Maggie
Ottilie Marguerite
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.