The inconvenience thing is an issue, but this is a modest property and there are many alternative sources of light in the normal domestic situation, eg TV, bedside lights, clock display, oven light, moon light, street lights. I don't see it as critical that the property is rewired to have 2 lights circuits, though of course you can if you want to spend the money.
The lack of cpc is an issue of safety however and really needs rectifying. Given the age of the property it is likely that the lights are wired in singles. there are probably red singles looping in and out of each switch, a switch wire to each light position and a neutral looping round each light position. i would offer to fix this by replacing the single neutral with a new single & earth neutral and then just replacing each switch wire again with single & earth. No need for a complete rewire - job done in a day and cpc to all points. Remember this is a bungalow.
So you now tell us there is an immersion connected to the ring? Why is this not detailed on the PIR and given a code 4 (arguably a code 2 since there is only one ring, especially if this is your primary means of hot water)?
this needs fixing with it's own circuit. Probably less than half a day. If he was intending to do this, it really should be detailed on the PIR and quote.
At this age of property, it's also likely the immersion has no safety cut out - this is a code 2 and a new stat should be fitted (see the guides linked below)
If I were putting in a new dRCD Cu, I'd be tempted to split the ring into 2x radials at 20A each, one for the kitchen and one for the rest of the house.
The cables need properly identifying - given the age they are almost certainly imperial. I've attached a doc that gives you details about how to identify imperial cable and rate them around page 5 or 6 of this thread. If it's been deleted by 'the management', PM me and I'll send you a copy by email.
No mention in the report of supplementary bonding for the bathroom. Again given the age likely to be an issue, but a dRCD CU will sort that.
Also, why does the PIR not detail any 'extent' - it cannot be not applicable.
I've personally had a lot of trouble with Crabtree branded RCDs and RCBOs and won't fit them new, only if an existing CU is Crabtree. And that Electrium recall seriously dented my faith in any of their brands. IMO Hager are much better quality since they were redesigned (and better value and made in the EU & assembled in the UK).
The sparks should check out guides 1, 4 and 6 here:
Best practice guides : Electrical Safety Council
more advice for the spark:
Periodic inspection of existing domestic and similar installations : Electrical Safety Council
plenty of advice for the client here:
Home Electrics : Electrical Safety Council
