Before a fuse box is replaced, an electrician will inspect your system to ensure that everything is properly bonded and earthed. This will include all of the electric power distribution equipment currently in use in your home.
If there are any faults in the electrical installation, the fuse box replacement will need to be postponed until all of these issues are safely resolved.
A qualified electrician will also inspect your fuse box for any defects. This will allow the electrician to assess what work will be required for your replacement.
It may be necessary to replace any faulty circuit breakers at this stage to ensure that everything is operating safely and complies with all of the latest British Standard wiring requirements.
By choosing a certified electrician, you can also avoid some bureaucracy. Electricians registered with the relevant schemes can self certify the replacement of your fuse box and negate the need to visit your local council to notify them of the change.
This not only saves you time and stress, but you could avoid paying a hefty fee.