dan what you really do is strangle them till they pass out then ring the fuzz when they arrive tell them that they went for you with i.e an object... there no marks on the intruder or you so its his say vs yours when he finally comes round....he gets arrested and your smiling. when you next come round ill show you how to grab the throat its a usefull tool as to when you grab the person thoat and apply said preasure the human body concentrates on breathing rather than fighting. this give you enough time to hit the lower leg sending them south bound..and it leaves them with a sore throat for a few day....

other than what i do and have plenty of exsperiance doing it... i do think you can use reasonably force.