That was my initial reaction however I was wondering on set guidance or is it personal opinion. .... House Sale riding on it and don't want test my liability insurance for the sake of it
All inspection & testing work is the personal opinion of the inspector undertaking the work....
See the declaration you have to sign... Page 396 of BS7671 may jog your memory...
you mention two circuits... don't say what sort of circuits... loading... protective devices.... Zs... earth continuity... What the terminations at the accessories visually look like...
signs of overheating / cracking / crumbling / perishing insulation etc.. etc...
You only mention IR...
I cannot make any evaluation with such limited info...
If you are not able to make an evaluation of the condition of the circuits yourself using the recognised guidance notes etc...
Then possibly you are not competent to be actually undertaking the EICR??
But then again if you are competent...
Then make your decision, fill in your report and sign it...
There are no magic flow chart books with all the answers for testing and inspecting..
EVERY installation is unique and the inspector has to have the balls the make their call based on their knowledge of that installation...
In a lot of cases rubber cables are beyond there reasonable working lifespan...
and should be left undisturbed to avoid further deterioration..
and then replaced at the earliest convenience...
{there is a guidance note somewhere that says that}
BUT also not all rubber cables have had a high loading hard working lifetime..
and can still have a few years of current carrying left to go!!!
As a general rule a few electrical improvements are unlikely to stop a house sale if someone is really keen on a property...
The proportional cost between the house and a bit of rewiring work is a small
AND if they don't like your report they can always get a second opinion!!
So go with your gut feeling based on what you have seen and your test results!
Guinness