According to an article by Kyriakos Paloulian in the Nov 2013 Model Aircraft the following Spitfires were lost in the Civil War.

335 Squadron. Mk V: MH29B, EF566, Mk lX: PP2O3

336 ‘Olympos’Squadron Mk Vb: TK885. Mk lX: MJ522, PV324, PT939

Spitlire write-offs. . PT369, PT660, RR192, MJ391, PT427, M1725,
MH455, P1356.

Unfortunately Spitfire International does not have any more information, mostly saying ‘fate unknown’.