Most of the standards and regulations for electrical wiring in the UK are similar to those that exist in other European countries. However, there are some differences that need to be taken into consideration when electrical work is performed.
There are a number of building regulations in the UK that must be taken into consideration when planning any type of electrical work. This includes the "Part P" of the Building Regulations, which was introduced in January 2005 in England and Wales. This legally enforceable regulation applies to all electrical work that is done in the home, and has specific regulations which apply to electrical work done in the kitchen and bathroom, as well as other areas where water and electricity are in close proximinity. "Part P" was introduced to help protect homeowners from the injuries, fires and death that can result when electrical installations are not performed correctly.
If a homeowner or unregistered electrician plans to do work in these types of areas, the building control authority must be informed concerning the work that is going to be performed, before the actual work begins. After the work has been completed, it must be inspected and approved by somebody who has been awarded the "Competent Person" status. After being inspected and approved, the building control authority will award the required Building Regulations Completion Certificate.
Since electricians who have already been awarded the "Competent Person" status are not only certified to do electrical work in kitchen and bathroom, but also able to "self-certify" the work they do, most people who need this type of electrical work performed find it easier to simply have an electrican who has this status do the work. When the work is performed by somebody who is already certified, they will be able to not only do the electrical installation, but will also take care of notifying the appropriate authorities, as well as testing the work that was performed. You also have the option of taking out an insuranced-backed guarantee if you want to, and have access to a formal complaint procedure if you aren't satisfied with the work.
There have been a few other recent changes to electrical regulations, including a change in 2006 concerning the colours which are used for electrical wiring. This colour change can cause some confusion if one isn't careful, since the colours might vary in older installations. The current wire colour scheme follows the international standard IEC, which in single phase electrical installations states that blue is used for neutral and brown is used to indicate the "hot" live wires. This is different from the previous standards which stated black for neutral and red for live wires.
There are also specific regulations that defines zones in outdoor areas, such as what surrounds a swimming pool. There are also special sockets which are specifically designed for use in wet locations and for use outdoors. When considering electrical work in these areas, one is best advised to consult with a competent electrician for the sake of safety.