International students who make an application for UK disability funding are likely to be refused. However, there are exceptions, such as EU/EEA migrant workers who might be considered. Further details are given in the 'Costs of Study' part of the Money Matters section of the University Student Handbook. If you have a query about this please contact Student Advice and Welfare Services for advice.
It is also worth exploring possibilities of funding assistance within your home country as certain governments (eg the Republic of Ireland) do run schemes to support disabled students.
If you have further queries, please contact the Disability Services.