Water Fire Extinguishers - Suitable for Class A fires such as wood, paper, fabric etc. - not to be used on electrical equipment or hot oil.

Foam Fire Extinguishers - Class A and B Fires including general solids and flammable liquids. Also for liquifying plastics.

Carbon Dioxide Fire Extinguishers - For class B Fires and Electrical Fires Electrical Equipment and flammable liquids (not kitchen fat!).
The preferred choice to cover electrical fire risks

Powder Fire Extinguishers - Class A B C and Electrical Fires - General materials, flammable liquids, flammable gas, Electrical Equipment. Dry powder is not recommended for use in offices, as it causes lots of damage, however, this is ideal for industrial applications, as well as the car. Do not use in small rooms as there is a risk of inhalation.

Wet Chemical Fire Extinguishers - Class F Fires - Deep fat fryers and cooking oil fires.