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:
Artie
Bay Alexander Lawrence
Finley James Scott (Oliver)
Harrison Peter
Henry Charles Peter (Hugo Richard Christopher)
Henry Christopher John (Griffin Wyndham Roger)
Jacob (Lacie & Kelsey)
Maxwell Arundel
Nico Donald
Noah Wilfred David (Edie & Mabel)
Oliver Finley James
Thomas Matthew
Wilfred Stanley
Girls:
Emilia Pia Alexandria
Felicity Gertrude (Georgina Baie)
Henrietta Sophia
Ivy Alice
Tallulah Storm Elsie
Twins:
Camilla & Olympia (Piper)
Ernest Lawrence Leighton & Humphrey Hunter Harris (Percy)
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.