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:
Alex James
Arthur
Atticus Peter Stanley (Jacquetta Elizabeth Artemis)
Christopher "Kit" George (Thomas "Tom" Benedict & Tessa "Tess" Elizabeth)
Hudson Ryan
Jaxon Scott (Harley)
Raife Theodore Ian
Robert Oscar (Harry)
Robin Iver Montague (Raef Julius Francis & Fawn Alexandria Sari)
Rupert Arthur Alan Hlaing (Ptolemy)
Samuel Elias
Girls:
Anya Charlotte Iona
Emalie Violet (Logan)
Fern
Layla Olivia (Oliver James)
Stephanie Emma
Twins:
Matilda Elizabeth & Tess Maria (Clara Rose)
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.