- Latest available (Revised)
- Original (As made)
This is the original version (as it was originally made). UK Statutory Instruments are not carried in their revised form on this site.
If a sound level meter is used, T is five seconds.
The number of measurements is 5.
Latest Available (revised):The latest available updated version of the legislation incorporating changes made by subsequent legislation and applied by our editorial team. Changes we have not yet applied to the text, can be found in the ‘Changes to Legislation’ area.
Original (As Enacted or Made):The original version of the legislation as it stood when it was enacted or made. No changes have been applied to the text.