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:
Angus Michael Alastair
Benjamin Charles Georg (Maximus John Richard)
Charles Alexander
Dylan James
Hamish Perrie William
Harry George
James William
Jasper Alfred Francisco (Sacha)
Nico Hugh Morrison
Girls:
Aurora Charlotte Rose
Clementine Rose Alba
Cressida Georgina (Willa Esme)
Grace Elizabeth (Charlie & Edward Leonard James)
Layla Grace
Leonora Rosemary
Margot Sita Vanessa Runima (Humphrey Prakash Sen Wykeham)
Orla Mary (Bethan Grace & Harry James)
Zara Nicole
Twins:
Harry Holland & Annie Hartman (Ella Hartman)
Mailys Jenny Campbell & Calla Joanie Rhoda
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.