That EICR, the £120 paid for it and the location (presuming London) makes me smell a rat. A really big humongous rat at that! The limitations of the report are poor. It would take very little time to do the R2 tests for instance, and given the lack of Zs figures there is no effective knowledge as to whether the protective earth conductors are satisfactory.
The wording in the observations column will mean little to nothing to the average customer, and my guess is that it is like that on purpose, so the customer is left in the dark. It is extremely vague wording also with no particular reference to where the issues are found within the property.
I also think that the company that carried out this report are probably of the ilk that carry out cheap EICRs to then serve as an income generator for remedial works.
Not all electrical contractors are like this. I think you have been had on this occasion - sorry.
I would suggest getting the consumer unit changed and earthing/bonding upgraded, where by which you will get all the circuits tested. Going forward this will give you an idea of which, if any circuits are in need of rewiring. It will also mean new sockets etc can be added much more easily.
I would be looking for a new electrician, and I would show them the report and even your forum post (if they are interested to look!) Tell them your concerns and take it from there. There will be someone on here who should be able to help.
Good luck.