Why are British plugs so big?
Why are British plugs so big? To save copper, Britain adopted the ring main system, with sockets connected sequentially, but this meant each connection needed its own fuse. Instead of putting the fuses in the sockets, they were included in the plugs themselves. Hence the UK's bigger plugs.
Is it illegal to have a plug socket in the bathroom UK?
It's not illegal, but there are technical standards that make it impossible in most bathrooms. Sockets are allowed in British bathrooms provided they are 3 meters or more away from the water sources (taps in the sink or bath as well as showers). Shaver-supply units are the single exception to the standard.
Is the UK the only country with 3 prong plugs?
This electrical socket is common in: GB, Ireland, Cyprus, Malta, Malaysia, Singapore, Hong Kong, ... The Type G plug has three rectangular pins in a triangular pattern and includes a fuse (usually a 3A fuse for smaller appliances, such as computers, or a 13A fuse for larger appliances, such as heaters).