Some nations' hydrographic offices have defined their own boundaries; the United Kingdom used the 55 S parallel for example.

The United Kingdom uses yellow signs with a series of symbols for its emergency diversion routes.

The United Kingdom used a related scheme.

The Netherlands has such schemes and United Kingdom used to until A day.

In the United Kingdom and other countries using British spelling, only aluminium is used.

However, the United Kingdom and Ireland use a slightly different layout.

The United Kingdom uses a cut-off of two years for early and late latent syphilis.

For example, the United Kingdom, whose alpha-2 code is , uses .

The United Kingdom uses a type number system for much of their military equipment.

Since that agreement, the United Kingdom has accepted and uses the name Ireland.