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:
Aarav (Avaan)
Albert "Alby" William Ga-Yin (Freddie)
Archer Thomas
Archie James Robert
Barnaby Stainton Darcy (Clementine Elisabeth)
Bruno Wincenty (Emilia Zofia)
Casper Harold (Layla)
Edward
Elias Daniel Weston (Ariana Siiri)
Frederick William
George Frederick Cecil (Henry William Redfearn)
Jake Harry
Joaquin Patrick Napier
Johnny Henry
Kit John William
Leo (Maiya)
Monty Scott
Oscar Thomas William
Ranulph William Victor (Ferdinand)
Rocco James Elgin
Rory Jonathan (Beatrice & Emilia)
Rune Robin Hugh (Edie Wren)
Ted Anthony Nicholas (Georgia Eva)
Wilbur James
Wilfred George
Wilfred James
Girls:
Alice Jayne
Chloé Françoise
Clementine Linda Barbara (Rufus)
Cordelia Winifred Constance (Frank Lanoe Peter, Finetta Rose Elizabeth, Edward Pelham Henry & Octavia Annabel Philippa)
Cosima Maisie Edith
Eleanor Grace
Ella Iris (Iona & Joseph James)
Emily Rose Georgina
Freya Alexandra
Gigi Isabella (Penelope Jane)
Helena Rose
Maya Rhiannon (Zara Carys)
Ottilie Sophia Martha (Fiona Margot Amelia)
Wren Hester (Winter Errington (b))
Twins:
Emily Joan & Jack Freddie
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.