On Sun, 4 Jan 2015 14:40:34 +0000, Andrew Chaplin wrote
(in article 1):

As a footnote, I was surprised to see that some UK aircraft apparently
used the flag as the national marking as late as 1916; I thought that
had changed by late 1914/early 1915.

Might it depend on whether or not it was RFC or RNAS, or whether or not it
was operating at sea as opposed to from land bases? Or the UK v. the
continent?

I can't see a pattern yet but it appears to have been RNAS only although not
consistently. Sometimes at least, aircraft with the flag appear to have
carried red and white roundels on their wings.