Lyneham Lad and Nutloose,
Lovely pic ! The "Buried Spitfires in Burma" seem to have been fictional, but I can tell you where to find 24-odd Corsairs, brand new, CKD in their crates.
About 30 miles off the Malabar coast at approx 11 degrees N. Lat, they are on the seabed where (as deck cargo) they were bulldozed off an RN escort carrier which was taking them out to Ceylon. (Perhaps the Navy could look up the ship's log [don't know what its name was], and give the exact position), do you think, Union Jack ?
VJ day came while they were in transit; as Lend-Lease supplies they had to be dumped as neither the USN or RN wanted them any more. They'll be a bit rusty now, 70 years on.
Should be on the Continental Shelf: all you need is a trawler and a lot of time and dosh.
Danny.