Ive already emailed them.
I agree with you raising your concerns with them, Bodd.
Perhaps you should email Battersea Dogs Home as well, and Shelter, and RSPB, and RSPC, and Breast Cancer Now, and Dementia UK, and Greyhound Trust, and the Donkey Sanctuary, and don't forget Age UK, to explain how you think their charities discriminate against young and middle-aged white working class humans who have homes to live in, and are not suffering from incurable diseases.
You should complain about your sick, homeless budgerigar not being able to apply for support, that others are entitled to, not to mention your children's old, sick rabbit that is not wanted anymore.
They might take the time and effort to explain that they have very limited resources so they have to be extremely selective about who they can help, and while they'd love to help everyone, they simply don't have an endless supply of resources and support available.
At least, if you complained to all those charities and more, who target their limited resources towards the most deprived, they wouldn't be able to make the argument that you seem to think it's only the children of non-white parents that are being unfairly supported.