"So the two come in quite handy," Alex says.
He now has just under 50 flags and each is recorded in a journal.
Alex's wife Margaret came to New Zealand from England when she was a child, so he flies the St George flag on her birthday.
"I get the Scottish flag when it's my birthday."
Alex has learnt much about flag flying protocol and the history of flags from the book,
Fly The World's Flags by New Zealander Michael Parke. "Every flag has a story and every colour has a meaning."
Over Waitangi weekend, he flew the flag of the United Tribes of New Zealand. It was chosen in 1834 by Far North chiefs as the flag to represent New Zealand.
Alex says when it comes to flag knowledge, "I'm just a new boy."