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 Colin David (Isla Hazel)
George Reuben (Harry James)
Hugh David Haskell
Innes David John (Eden & Faye)
Max Michael (Amelie Elizabeth)
Patrick William Rex
Peregrine "Reggie" Christopher Gordon
William John Thomas (Charlotte Elizabeth Grace)
Girls:
Ada Rose
Camilla Martha Octavia
Cora Constance (Bailey)
Decima Eliza
Dorothy Joan
Holly May
Olivia Rose
Ottilie Dalton Rainnie
Susanna Charlotte Maud (Hepzibah Lavinia Rose, Joshua Henry Jonathan & Elizabeth Arabella Primrose)
Thea Johanna (Eva Marie)
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.