All new, or substantially refurbished, non-domestic buildings which are accessible by the public, are required to provide washroom facilities which can be used by everybody, adults and children, whether they have special needs or not.
There is a requirement for all new building work to comply with Approved Document M of The Building Regulations, The Disability Discrimination Act, and BS8300
BUILDING REGULATIONS 2000 | APPROVED DOCUMENT M : 2004
Any new or substantially refurbished building must be built so as to allow the same rights of access to disabled people as able bodied people.
Suitable sanitary arrangements must be provided for ease of access and use
Washroom facilities for these commercial premises must be provided as described in Approved Document M Section 5 of the Building Regulations.