The answer here depends on the extent of your porch! It would need to be exempt under scedule II of the Building Reg's for you to be able to install. To be exempt it would need to meet the following criteria;
- Be under 30m2 in floor area.
- All glazing must be saferty glass to BS6206, ie. toughened or laminated.
- The porch must be thermally seperated from the dwelling ie. an external front door is to remain and this is not an extension to the hall!
However just because the structure would be exept under the Building Reg's the electrics (if any) will not be! best an easiest way to comply here is to use a registered domestic installer on an appropriate competent person scheme. ie. NICEIC, ELECSA, NAPIT etc.
With regard to the front door, a door only needs to fitted by a FENSA install or an application requiree to Building Control if the area of glazing in this door exceeds 50% of the total door panel, if its less then you can just do it without invovilng FENSA or the Council