In England, appliances typically come with a cord already attached, allowing them to be plugged into electrical outlets. It is not common or necessary for customers to take appliances to an electrician to have a cord put on them. Most appliances are sold ready for use, and the manufacturer or retailer ensures that they are equipped with the appropriate power cord for the country's electrical standards.
However, it's important to note that the type of plug and voltage used in the United Kingdom is different from those used in other countries. The UK uses a unique plug type known as the BS 1363, which has three rectangular prongs. So, if you're purchasing an appliance from another country, it might not come with a compatible plug, and you may need to use an adapter or have the plug replaced to fit UK outlets. This is usually a simple task that can be done by the customer, without the need for an electrician, by following the appropriate instructions or consulting the user manual.