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:
Digby Reg (half-sib: Rocco Feilding)
(Duncan) Hamish
Dylan John
Freddie (Charlie)
Henry Proud (Christopher John & James Francis)
Hugh Francis John (Thomas Alexander Graesser)
James Alban Archer
Maximilian Dennis Sidney
Noah Joseph Michael
Sebastian Bernard (Francis William, Edmund Patrick, Ambrose Matthew, Fabian Christopher)
Zander Jack
Girls:
Alice Jennifer Joan
Emilia Isobel (Olivia & Joseph James)
Emma Hazel (Jack)
Georgia Eva
Isla Annie Isabel
Zara Louise
Twins:
Nina Cicely & Beatrice Elizabeth (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.