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:
Arthur Terry
Beau Arthur Maurice (Lottie Scarlett Denise)
Bobby Ralph
Charles Jago Thomas
Christopher "Kit" Joseph Charlie (Donald Fergus Ralph, Finnian Angus Peter, Rose & Ossian Francis Robert)
Digby Arundell
George Christopher Valentine (Henry)
Henry Alexander
Jonty Charles Quinlan
Kane
Myles Robin Philip
Percy Laurence Patrick (Ophelia Ethel Florence)
Raphael Remy (Hebe & Gaia)
Rhys Peter
Tobin (Aubrey (b) & Jasper Lee)
William Hugo Louis (Oliver & Alexander)
Girls:
Augusta Marie Louise Barbara (Pia-Stella Norah & James Xavier Antoine Thomas)
Eliza Jane (Angus)
Elizabeth Mary
Florence Anita
Grace Francesca Freda (Finlay)
Lara Iris (Lily)
Penelope Constance Emilia (Frederick Michael Thomas)
Posy Allison
Twins:
Bartholomew Richard Peregrine & Cordelia Noeline Annie
Jake Devereaux Pember & Rory John Bere (Emilia Grace Ivy)
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.