Well it's been an experience!
I will have completly finished the 2nd fix and testing by this friday. There was a fair old break after the first fix as the client's wanted to do ALL the plastering themselves, bit by bit, so it took weeks to complete and dry. They had the basics working for christmas and it was all agreed upon before hand what I would keep working for them throughout the rewire, bit of a struggle (or rather time consuming) to work out the logistics of keeping specific parts live though!
Things I have learnt from this:
1. Charge more.
2. Do not take on a 'lived in' re-wire (luckily this was half lived in - all carpets up, rooms fairly bare).
3. The DNO are quite nice chaps.
4. It takes a lot longer than 1 day (1 day rewires- no way!)
5. Have a proper look in the loft before you start.
All in all I enjoyed it, a good experience. Thouroughly enjoyed designing the layout/circuits from scratch making them as efficient as possible. I must admit it got a bit stressful at times during the first fix and maintaining power in certain areas. I can imagine a 'live out' rewire would be a complete joy compared to 'lived in'.
Well, thats the final update, I hope I get another re-wire soon.