Internal Fire Escape Window - Strange Question!

[mickeych]

Does anyone have any experience of installing a fire escape window from a 1st floor bedroom without a window into the ground floor kitchen/breakfast room as an escape route. We have a listed building which we can't get permission for an external window for the bedroom, but we do have permission to create an opening between the bedroom and the kitchen (originally intended as an ensuite). The Fire Engineer seems to think that this might work as the height between an escape window in the bedroom and the kitchen is 2M. There are other means of escape, through another bedroom window (over a non-securable landing) or down the main stairs, and we have agreed to automatic venting through the rooflights and an upgraded alarm system, but the question is whether anyone else has experience of an odd situation like this?

I am suspecting that it will come down to BC and how they are feeling about it, but has anyone had any similar experience?