Internal door

[nodthebuilder]

Hi guys just looking for some info. 

 

Project is in Scotland. 

 

On the drawing there was just an opening from the main house into the porch, which is on spilt levels. 

 

The (swear word) joiner convinced the client to fit a door to the opening but has it swinging into the porch. 

 

I know external doors need the swing of a door plus the requirement to meet regs. 

 

So my query is will this internal fall under the same requirements as an external as the current extension to the floor he formed is only 300/400mm from the frame so not giving much of platform before the floor drops in height. 

 

Thanks in advance