Oooops...sorry...you have to be a member of the Flags of the World...Yahoo mailing list. They have this flag on their Specially Sewn - British Flags and Ensigns photo page.
Their picture...
The info off the forum...
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I would call this a patriotic decoration rather than a flag, in the sense that it was probably meant to be draped indoors, and not flown on a flag pole.
It has the Star of India in the centre, four white stars on the St George's cross probably represent New Zealand, the arms of Australia, Canada, and Union of South Africa in the quarters. The South African arms were granted in 1910. The maple leaves on the Canadian shield were blazoned in 1921 and changed from green to red in 1957.
It might have been produced for celebrations in connection with the Silver Jubilee of George V in 1935, or the Coronation of George VI in 1937.
The Australian Coat-of-Arms was the official one between 1908 and 1910. As for the Southern Cross, I believe it stands for New Zealand.
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I also found this...
http://www.crwflags.com/fotw/flags/gb-colon.html#emp