>>> "TTT that has answered the question"
. . . but certainly not fully!
Businesses are required to make 'reasonable adjustments' to ensure that people with disabilities aren't treated any less favourably than anyone else.
Quotes from the legislation:
" . . . where a provision, criterion or practice [a business] puts a disabled person at a substantial disadvantage in relation to a relevant matter in comparison with persons who are not disabled, to take such steps as it is reasonable to have to take to avoid the disadvantage".
" . . . where a physical feature puts a disabled person at a substantial disadvantage in relation to a relevant matter in comparison with persons who are not disabled, to take such steps as it is reasonable to have to take to avoid the disadvantage".
" where a disabled person would, but for the provision of an auxiliary aid, be put at a substantial disadvantage in relation to a relevant matter in comparison with persons who are not disabled, to take such steps as it is reasonable to have to take to provide the auxiliary aid".
[Section 20, Equality Act 2010]
Whenever a new pub or restaurant is being built (or when substantial alterations are being made to upgrade an existing one), there is clearly a legal duty on the business owner to ensure that fully-accessible toilet facilities for the disabled are provided. In other cases it would ultimately be up to a court to decide what should be regarded as 'reasonable adjustments' for the business owner to have to make to the premises.