The sleeping accommodation is situated directly above the pub's kitchen. I didn't manage to look above the false ceiling in the kitchen. The means of escape is through a 30 minute protected staircase to fresh air. There is an alternative 'route' which is through a first floor function room which also goes to fresh air air. The pub is covered throughout by heat detection linked to detection in the sleeping accommodation.
In accordance with LACORS my solution was to verify or make up the false ceiling in the kitchen to achieve 30 minutes fire resistance (I don't know how practical this is) and replace all heat detection with smoke detection. Additionally, install smoke detection in the first floor function room which already has fire doors on it. Agree or disagree?