Q - Does gas have to be fitted by a Corgi registered person?
A- I would always recommend that any gas work required is carried out by a Corgi registered fitter and that you get a receipt to prove the work at any future date. However, unless l am proved wrong - it is not against any regulation for you to do the work in your own home in your own kitchen. You cannot pay anyone else unqualified to do so and you can't do gas work for anybody else but it seems a quirk in the regulations allows you to do it yourself.
Having said that - it is really not worth the risk and you will find you will sleep easier if you know it has been done by someone qualified & experienced.
Q - Can l do any electrics in my kitchen?
A - You can do the following which are not notifiable under Part P regulations;
Replace the sockets/light switches etc with new one
Replace the boxes that the switches are fitted in to
Replace an electric oven as long as it is like for like (check power rating)
Replace ceiling lights
Replace damaged cable between sockets
Fit low voltage under cabinet lights if plugged into a 13A socket
You can't;
Fit any new sockets, extend the ring main or extend the lighting circuit etc.
If in doubt check the regulations at the link above.
Q -How do l remove the plinths at the bottom of the base units
A - Most plinths are just held to the legs by clips so getting some type of lever behind the plinth should remove them. When you want to put it back on just position the clips over the legs and push it on. Check first though - some kitchen fitters also put screws through the bottom of the cupboard and into the top of the plinth, remove them if you see them.
Q - Why is there no mention of using a circular saw in your book?
A - Only because in my opinion they are a very dangerous tool to use without experience. The book is designed for those new to kitchen fitting so l don't presume everyone can use a circular saw. I have seen many bad accidents resulting from using them and there is no job in the kitchen that can't be done with either a jig saw, handsaw or router.