Altered Wiring.

You can only produce a EIC for the work you have done. If they want an EICR then you have to do that seperatly.

I am in a similar position at the moment. I have replaced a number of lights and installed many more in a village hall which required a complete rewire for the replacement and new lights and switches. There is however a lot of the wiring which I have not touched on the modified lighting circuits. Do I do full tests on the old wiring I have not touched? I am fortunate that I did a full test when replacing the consumer unit about 10 years ago.

The customer needs a full EICR, which I will not be doing, for insurance purposes after I have finished.

Certify/notify etc etc only what you have done. If they want an EICR and you are able to do that as and when they want then this is an additional chargeable event. Perhaps comment the fact when you give your invoice (or before) just to clarify that final settlement is not dependant upon that extra bit

I agree that you can certify only your own work. Anything else requires an EICR, which will be limited in effect to the altered circuits.

I don't think that you can do anything about the work that has been planned but not undertaken.

At my chum's self build, I have been certifying as I go along, even for partially completed circuits. I have also kept notes of all the tests at the various points during construction.

I have not repeated tests for circuits which have not been altered except that I checked Zs at each final circuit when the origin was moved and the distribution circuit was altered. The top floor ring was a bit of a puzzle until I discovered a missing socket where the ends had just been taped together!

But some of my work has been fiddled with, altered, extended, modified, changed, by A.N. Other.

Example. I deliberately installed two single 13 Amp. sockets in a utility room. One for a washing machine and the other for a tumble drier. Each circuit was fed from a separate B16 R.C.B.O. The machines will be used by holidaymakers. Now I find that a meddler has installed just one double 13 Amp. socket on just one B16 R.C.B.O. I designed the circuits so that they could not be overloaded and would be reliable. He has diverted one of my circuits for kitchen use. But I had left spare ways for future use in the board. He did not use these. GGGRRRrrrrr ?

Z.

Then as the designer he is quite happy sign responsible that part of the 3 part form yes ?

Zoomup: 
But some of my work has been fiddled with, altered, extended, modified, changed, by A.N. Other.

Example. I deliberately installed two single 13 Amp. sockets in a utility room. One for a washing machine and the other for a tumble drier. Each circuit was fed from a separate B16 R.C.B.O. The machines will be used by holidaymakers. Now I find that a meddler has installed just one double 13 Amp. socket on just one B16 R.C.B.O. I designed the circuits so that they could not be overloaded and would be reliable. He has diverted one of my circuits for kitchen use. But I had left spare ways for future use in the board. He did not use these. GGGRRRrrrrr ?

Did you certify it as you went along? If you did, the changes are nothing to do with you, albeit v. annoying.

If you didn't, I don't think that A.N.Other has introduced a non-compliance so you can still certify the utility room circuit. The nuisance tripping will be the householder's problem.

The diverted circuit for the kitchen could be a problem because it will be longer or shorter than it was, so it needs to be re-tested. Strictly, that would require an EICR, but pragmatically, I would probably have a shufti behind one or two of the sockets (hoping to find grommets, sleeved CPCs, and backbox tail). If all is well, adopt the work, but if not, charge a little more to put it right.

And the end of the day, you want to get paid, but you don't have to do any more work there.

No Chris I did not certify anything as I proceeded. I did though test and take notes of the  results. The installation  requirements were constantly changing so weren't written in stone. I was going to do all of the paperwork at the end. If I installed a sub-main and new consumer unit at the end, plus final circuits, they may have been altered beyond recognition. So I am thinking that a complete I&T with E.I.C.R. is required now. A.N. Other is an electrician, the son of the boss. Shouldn't he verify his own work as complying and certify it?

Z.

But some of my work has been fiddled with, altered, extended, modified, changed, by A.N. Other.

In that case Zoom they are responsible not you

I agree - certify exactly what you've done - nothing more. Make good use of the ‘Extent of the installation covered by this certificate box’ and if need be the circuit description on the Schedule - ‘E.g. 20A radial feeding 2 single sockets…’

   - Andy.

Zoomup: 
No Chris I did not certify anything as I proceeded. I did though test and take notes of the  results. The installation  requirements were constantly changing so weren't written in stone. I was going to do all of the paperwork at the end. If I installed a sub-main and new consumer unit at the end, plus final circuits, they may have been altered beyond recognition. So I am thinking that a complete I&T with E.I.C.R. is required now. A.N. Other is an electrician, the son of the boss. Shouldn't he verify his own work as complying and certify it?

Good question!

I agree, I&T with EICR, but will they pay for it? I suspect that you are between a rock and a hard place.

There is no doubt in my mind that your moral (ethical) compass points in the right direction. Good luck!