My sincere thanks to all for their helpful comments and suggestions. One leg has been reserved for one or more of turkey shami kebab (with added egg as binder, because cooked turkey won't bind, so it will be a sort of inside-out reshmi kebab !), turkey & leek pie, and turkey chat. The other leg is now deboned and is currently marinading in lemon juice, yoghurt, ginger, garlic, fresh red chilli, ground kala jeera, Bassar curry masala, salt and a smidgen of tandoori red. The marinade is pretty strong, but I think that the turkey is going to be pretty resistant to taking up flavour, so it may work OK out in the end.
** Phil.