What's the difference between a UK king and a super king?

A UK king is 5ft (150cm) wide by 6ft 6in (200cm) long. A super king is 6ft (180cm) wide by 6ft 6in (200cm) long. Each sleeper gets 75cm on a king, 90cm on a super king. The length is the same. The extra 30cm of width is the whole difference.

How much space do you need around a king-size bed?

The working guideline is 60cm of clear floor on each side of the bed and 75cm at the foot. For a 5ft (150cm) wide king, that means at least 270cm of wall-to-wall space on the sleeping side. Less is liveable, but doors, wardrobes and pinch-points get tight.

Will a king fit in a normal UK bedroom?

A king (150x200cm) needs at least 270cm of clear wall on the sleeping side once the side-clearance rule is applied. Most second-bedroom UK builds are 3.5-3.6m one way, which fits but limits other furniture placement. The main bedroom in a 3-bed semi (typically 4-4.5m) is the natural home.