Disability groups are preparing to take UK companies to court over breaches of access rules that came into force at the end of 2004.
The rules, part of the Disability Discrimination Act, require businesses to make reasonable adjustments to their premises to ensure disabled people can access goods and services.
However, the Disability Rights Commission (DRC) estimates that of the two million businesses affected by the law only half have complied.
The DRC said it has the funding to back cases and is looking at action over the next few months.
Companies can face fines of up to £50,000 for non-compliance.