Just to add a couple of minor but potentially significant things on the EICR report itself.
It's been listed as further inspection required after 3 years or change of tenant. Assuming this report is to confirm suitability for renting, then a 5 year period is required. For a property of the age stated, I can't see any reason why the report wasn't given for 5 years, so it may be worth chasing that up, otherwise you would in theory have to do another one in 3 years at additional cost.
There are also a couple of niggling errors on Page 3, which don't really impact the safety, but suggest either inexperience or sloppy filling out of forms.
Specifically, U in nature of supply characteristics should be N/A, not 240 - for a single phase supply.
If the main switch is actually a 60947-3 as listed, then it does not have a fuse/device rating, so that should be N/A.
The certificate also seems to suggest that there is either no room containing a bath or shower, or no electrical circuits in it, since he has put N/A for additional protection by RCD (6.1)!
My guess is that if this is a dual RCD board, that should be ticked, so not a significant issue, but one that stands out to anyone experienced looking at the form.
Re bonding, there are some different views on how to approach it, but I'd be surprised (but not astonished) if a new build from 2011 wasn't bonded if necessary (unless things have been moved since).
If it's not plastic pipework coming in, then bonding can often be verified by wander lead testing, though to be fair if the end of the bonding cable isn't accessible it isn't always possible to rule out earthing via a boiler manifold or similar, so there is an argument that C2 might be appropriate where the reading is inconclusive.
Having mentioned boiler - he mentions that bonding required to "gas and water pipes at boiler", which is a little confusing.
If the services enter in metallic pipes then they do need to be bonded, but at the appropriate isolation points (or as near as practicable). I guess they could both be by the boiler.
I wonder if he is talking about cross bonding at the boiler, which some plumbers like to do but is not necessary.
Either way I can't really see how £300 was reached as a price for remedials, so I would definitely be getting other quotes for that. I would also ask him to reissue the certificate with a 5 year life, or give a good reason why not.