Make your mind up
It's not a pass or fail test. If everything is ok except for a gas fire that you class as ID then cut and cap is it a partial fail??
It's just a snapshot of the property on the day. If the installation is ID than that's what you put on the notice.
If it's AR or Id and you are refused permission to make safe then you pass the responsibility on to the Gas transporter who will knock on the door with a feather duster before deciding noones home and capping the installation off in the road. Then it gets expensive for someone!