1) The work comes under Part P and the fees paid to the Council Building control vary also what they will allow you to do also varies in the main itâ€™s a lot of hassle with little gain and I would think your better getting a spark.
2) Free standing appliances are required to have any overload devices under 16 amp built in as must be EEC compliant not just UK. So they will not require an MCB but one would use 13 amp fuse or less according to flex size. One would normally fit grid switches so they can be isolated for de-frost etc.
3) The cooker, if free standing, will normally be supplied with a 32 to 45 amp supply. If built in then you may need to match the MCB to manufactures recommendations and hob and oven may need their own supplies.
4) It would be normal as with a cooker to provide a switch which could still be reached to isolate in the case of fire. And normally supplied from the ring main.
5) Lighting is changing so rapid it is hard to keep up. I would look for a type which would allow the use of energy saving bulbs as tungsten are to be phased out. The cold cathode and LED bulbs tend to be longer than the tungsten quartz halogen types so some fitting will not accommodate the extra length. Transforms as such are not used much anymore where SELV types are used inverters which better control the voltage and therefore the bulbs last longer are now the norm but each time I look there is something new.
6) Not a clue on price area and what you want the electrician to do will make it vary so much.
What I would consider is what it is worth doing with DIY the Part P often charges one fee and if you are doing even some of the work your self then often an electrician is unable to sign the installation certificate under the self cert scheme so make sure you know exactly who is doing what before you start it is no good at the end of the job asking for an installation certificate only to find he canâ€™t sign it and having to pay extra for building control to do it after work has started. It is your responsibility. I would follow links in projects both for Part P and 17th Edition and at least scan quickly through it before you buy anything which will not comply with either of the rules. Be very careful with consumer units there are so many types now easy to make a mistake.
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