Where is Dr Ernest Drake's estate?

I don't know if you mean Castle Drake, DR Drakes Dragonalia or S.A.S.D place, Castle Drake was somewhere in Sussex, DR drakes Dragonalia lied in Wyvern way, London and so did S.A.S.D. Why do i type WAS and LIED, because he is dead and his places probably doesn't exist anymore. The S.A.S.D place might still be around though.