The shot I found via the net printed in old book shows the red/white/blue roundels on uppers. The pic was taken circa 1949.
However I have seen images of Seafire FR.47 VP455 of the 804th Squadron taken in December,1948 and of the VP431 no.137 ( pic dated November 1948 ) embarked on the HMS Ocean with the red/blue roundels. Also the number 136 from the HMS Ocean ... pic date April 1948. It seems that the period of changing of the roundels lasted from May 1947 to the end of 40'. Because your kite is the FR.46 the red/blue national markings on wing tops are very likely.