Surprised you’re not completing a DEICR on change of tenancy as though that was pretty standard.
The only time we may not complete a full DEICR is where a change of tenancy occurs after less than 12 months. For these we say a visual inspection would be allowed if the previous test certification is available for the electrician to see at the time of test and they can then make a judgement.
If any electrical repairs/works are completed then we would expect some kind of certification even if void.
Hope that helps