If you are planning a new kitchen, positions of the current sockets may not comply to the electrical / building regulations: for example, sockets, fuse spurs and cooker isolators must be a minimum of 30cm (12 inches) away to the side of the sink and cooker. Regulations also specify that any built in appliances must have a accessible point of isolation.

You may want to consider plinth lights, plinth heaters, under unit lighting, pelmet lighting and down lights recessed into the ceiling.

Please read the section in this site Extensions & Conservatories as the notes relating to extending circuits are also relevant to kitchens.