Many places where I worked there was a problem with electricians trying to say it was the other guys job. The inspection and testing of in-service electrical equipment has lists, the appliance list shows every items on the premises, there is also an out of service list and returned to service list, but in theory we were suppose to find every item on the list and test it, however items would be disposed of, and new items brought onto the premises and these caused a waste of time hunting for some thing that it not exist, and of course missing the testing of new items.
There are two exams for inspection and testing of in-service electrical equipment one to manage and one to actually do the job, neither really hard exams, but for the installation the exam was rather tough and many electricians failed the C&G2391 first time around. So the so called PAT testing, silly name as the T in PAT stands for testing, was often done by some one semi-skilled, and for an item they can plug into the testing machine it was not really a skilled job, the normal was for an electrician to do first test so he decided what needed testing, then a semi skilled guy took over, and the machine would prompt him as to what needed testing.
However with things like hand driers and immersion heaters they needed disconnecting to test, and in some cases needed two guys to ensure not turned on while being tested. Again theory we should have had locks to fit all MCB's but often the clips simply did not fit. So there was a trade off, with an extension lead clipped to the wall it was technically fixed insulation, but if it had a plug the PAT test guy did it, and the fixed installation guy did fixed items like the immersion heater.
Even then there were items like the cold drinks machine where we did not have the key, so these were on a service contract that included all inspection and testing. The HSE inspectors seemed happy with this.
However the time scale was based on the IET books so for example a computer would likely have a 4 year ticket and a hand grinder may have had a 3 months ticket, premises were the same and the private house had a recommended time of 10 years or change of occupant, it would seem the laws brought out in all three countries expect a higher frequency testing, and there are arguments in many forums as to what should be tested, and to what standard.
So a report made for a owner occupied house should be same as rented, but in real terms it's not, as the electrician is happy to give advice to owner occupied but put the same advice on an EICR for rented and the tenants can start demanding to have unnecessary work done.
I am sure it will settle down, but at the moment its going daft, we were always advised find some thing wrong, as if there is some thing wrong, then your not the last guy to work on the installation, so if you miss some thing you can shift the blame, to me a rotten way to work but I know it is done.