Hi stoaty, it could be a female hen harrier but it has'nt got any barring on it's breast, could this be because it's a juvenile from last years breeding?
Happy New Year pal, do'nt know what the situation is back at home now (i've lived on Crete for 20 odd years now) but back in the old days I always got my tripe from the local slaughterhouse. Hope this helps