I’m sure most of us are aware, however just incase BS 8300:2001 (Design of buildings and their approaches to disabled people - code of practice) has been revised to BS 8300 :2009. 

Amendments include:

• The recommendations on steps, stairs and handrails reflect those in BS 5395-1.
• There has been a relaxation of the recommendations on the provision of vision panels in doors, and more detailed information is given on the location and design of door opening and closing furniture.
•  More information is now provided on means of escape and references are made to BS 9999.
•  An increased percentage of accessible bedrooms is now recommended.
•  New subclauses have been included on accessible baby changing facilities and Changing Places sanitary accommodation.
•  Information on achieving sufficient visual contrast has been revised and included in a new annex that makes reference to BS 8493 on the measurement of light reflectance values.
• A new annex on slip resistance has been included, drawing on guidance issued by BRE and CIRIA.

These however are not exhuastive and reference should be made to the document itself online through The Construction Information Service.