Bear in mind the Tamiya markings aren't 100% accurate. The dragon marking for Noel Sharp's aircraft was only painted on the port side of the fuselage and the port underwing roundel did not have a yellow outer ring. The code letters should be in Sky Blue, as should the fuselage stripe and the front half of the spinner. Also, to be really picky, the red centre of the fuselage roundels is too large while that of the underwing roundels is too small (for some reason, Brewster got the ratios wrong for the first 70 or so machines, the red centre being over-large). Finally, the underside window was not overpainted on Commonwealth Buffalos in Singapore.
One other additional (and easy!) mod to the Tamiya kit for RAF Buffalos would be the addition of a second landing light - there should be one under each wing.
HTH,
B-N