I live in a 3rd (top floor) flat in a victorian end of terrace. My home entrance door is on the 2nd floor (ground floor being #1) . This door leads onto stairs which go up to the rest of my home. There is a partition wall between these stairs and the commonway on this 2nd floor. I want to remove the drywall skin on my side of the partition as it goes up the stairs and fit cubby holes for shoes. If the commonway side of the wall is double-skinned does that count as adequate fire protection bearing in mind that I will have removed my side of the partition skin and fitted custom drywall or similar boxes in the void between the studs to act as storage. Thanks for any opinion on this.