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:
Albert Beryn Ferguson "Bertie"
Alfonso
Cedric Barnaby Wilbur (Rafferty & Arthur)
Christopher James William
Ezra Alistair
Ezra Victor
Henry Leo
Michael Patrick Ambrose
Roman
Thomas Martin
Girls:
Amelia Mary Clare (Arthur John David)
Elodie (Cooper)
India Lorelei (Eliza)
Isobel Nancy Margaux (Phoebe)
Marigold Elisabeth Rose
Twins:
Heidi Penelope & Frederick Berkeley (Amalia Cicely & Matilda Victoria)
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.