The terms of your lease will define the areas of your apartment you are responsible for. These typically include internal wall and ceiling plaster, flooring, internal doors, bathrooms, and kitchen. Please speak to your On-site Manager should you want clarity on your repair responsibilities.
The landlord or managing agent is responsible for ensuring that maintenance and repairs are undertaken within the communal areas. Your service charge is designed to cover these costs. Please speak to your On-site Manager should you want clarity on communal repair responsibilities.