Emergency lights in communal areas

[Guest K White]

I have a flat in a (detached) four story block (no lift), with two flats on each floor. There are lights in the communal area at night, but are we legally required to have other emergency lighting?

[AnthonyB]

The common areas should have emergency lighting, although if not fitted retrofitting would be considered a lesser priority in risk assessment guidance  than matters related to fire doors and compartmentation.