Yes, I've just come across this myself, although I haven't bought the images.
I have discovered that the birth which I discounted long ago could well be right, because...
• I have found a birth for a Herbert Holliday on the correct date of 9th May 1908 in Withington, suburb of Manchester!
• The mother’s name was Ada Holliday, a domestic servant
• No father’s name
• In the 1911 census there is an Ada Halliday/Holliday (born Leeds c1883) visiting a couple in Leeds; she is single and has her two-years-old son, Herbert (born Manchester) with her.
• In the 1921 census there is a Herbert Holliday, born Manchester, living in Scarborough; there is also an Ada Holliday, born Stockton, living in Scarborough
The birthdates don't tally for the two Adas, however, and neither do the birthplaces but it's mighty convincing without actually paying to see, which I might have to do.