I do a lot of EICRs for landlords too and am staggered by just how many of them have already let properties without having had an EICR carried-out beforehand. Ditto smoke and heat alarms. Some of them are completely oblivious to the legal obligations that are placed upon them via a vis electrical safety when letting properties, and do not realise that responsibility for the safety of an installation and any electrical appliances that they provide as part of the tenancy lies exclusively with themselves.
I recently carried-out an EICR at a property owned by one such landlord and while I was moving a fully-laden fridge/freezer to gain access to the socket supplying it, a small section of loose, badly fitted,16 year-old linoleum was accidentally ripped. Upon submission of my invoice the landlord awarded himself £125.00 in compensation and deducted it from the bill. So from this point on NO ONE will be receiving any certificates until I have been paid in full.