> BT Tower -
> Regarded as of strategic importance, information about the tower was designated an ‘official secret’ and even taking a photograph of it was discouraged.
> From ground-
> Above the aerial platform is a viewing gallery and revolving restaurant (3) but this has been closed to the public since 1980 and is now only used for corporate entertainment. The restaurant made one revolution every 23 minutes.
> The lifts in the tower are some of the fastest in use, taking just over 20 seconds to reach the top.