Mattresses come in varying Standard UK Sizes.

SMALL SINGLE : (Standard UK Small Single Size = 2' ft 6" Inches Wide X 6' ft 3" Inches long  or 76cm X 190cm approx)

SINGLE : (Standard UK Single Size = 3' ft Wide X 6' ft 3" Inches Long  or 90cm X 190cm approx)

SMALL DOUBLE : (Standard UK Small Double Size = 4' ft Wide X 6' ft 3" Inches Long  or 122cm X 190cm approx)

DOUBLE : (Standard UK Double Size = 4' ft 6" Inches Wide X 6' ft 3" Inches Long or 137cm X 190cm approx)

KING SIZE : (Standard UK King Size = 5' ft Wide X 6' ft 6" Inches Long  or 150cm X 200cm approx)

SUPER KING SIZE : (Standard UK Super King  Size = 6' ft Wide X 6' ft 6" Inches Long  or 183cm X 200cm approx).