There's a numbert of issues with this thread.
Firstly the stastistics:
Prior to the introduction of Part P, it was widely purported that there were on average 30 fatalities per year in England and Wales caused by electricity in domestic dwellings.
In fact there were on average 34 per year for all types of installations, including 10 per yaer on the railways.
The stastistics however indicate that on average there were only 4 per year in domestic dwellings, in the whole of Great Britain.
In the first year of Part P, this number increased to 10, and in the second year to 13, unfortunately there has been a change in the reporting of the cause of death, and there are no reliable figures for any time after March 31st 2006.
Looking at the stastistics, it would appear that rather than requiring RCD protection in domestic installations, it would have had more impact on safety, to require RCD protection in commercial/industrial installations. It should also be noted that many of the fatalities on the Railways, involved persons coming into contact with the third rail, as such I doubt whether RCD protection would have had much of an impact.
It has been suggested, that a scheme similar to Corgi/Gas Safe be introduced.
The Corgi/Gas safe scheme allows home owners and tennants to conduct work on their own gas installations, and requires anyone else offering to conduct gas work for remuneration to be fully qualified and licenced.
At present, there are a number of schemes licncing electricians for Part P, or for commercial/industrial work. One of the largest being the JIB, which only really covers commercial/industrial work.
Unfortunately many qualified electricians are unable to obtain an 'electrician' grade through the JIB, whilst many of the schemes will licence unqualified persons, some of whom are not electricians, but are in fact plumbers or kitchen fitters.
With regards to the Landlords safety Certificates:
From what I understand, a gas safety Certificate, only really covers a very few appliances such as boilers, cookers (if provided by the landlord) and gas fires.
Whereas a PIR/EICR covers a whole installation (but not any appliance), and should involve (visual inspections not withstanding) much more work and time.
As such the cost should be much greater, and would vary according to the size of the installation.
As has already been pointed out, someone will have to pay for this, most likely the tennant.
There are the added complications, that at present the PIR/EICR allows for limitations, which is not something allowed for with gas safety certificates, and there are variuos codes that can be applied ranging from immediately dangerous (should be condemned) to it's not quite right, could be improved. Again something the gas safety certificate doesn't allow for.
Then there's the legal standing.
As I understand it, a gas engineer can disconnect a supply, if in their opinion the situation warrents it, whereas currently an electrician cannot, without obtaining the client's agreement.
I assume that some record is made somewhere, when a gas installation is condemned?