The Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020 require your landlord to have the electrical installations in your property inspected and tested by a qualified electrician at least every five years. The result is an EICR, which grades the condition of the installation and flags any issues that need attention.
Your landlord must provide you with a copy of the most recent EICR before you move in and within 28 days of any subsequent inspection. If the report identifies any urgent remedial work, the landlord must complete it within 28 days (or sooner if specified).
If your landlord hasn't provided an EICR or has failed to carry out required remedial work, you can report them to your local council, which can issue remedial notices and penalties.