Aston University has a "Contextual Offer" scheme called "Aston Ready" for students from disadvantaged backgrounds, including those who have spent time in local authority care or have been granted refugee status.
This scheme can lower the required grades, potentially reducing the standard BBB to something like BBB or even lower.
To qualify, you'll need to declare your situation on your UCAS form and potentially have a referee confirm your status.
Even if you don't qualify for a contextual offer, Aston University will still consider applicants with predicted grades below the entry requirements if their overall application is strong.
This could involve a strong personal statement, relevant work experience, or other achievements.
The best course of action is to contact Aston University's admissions department directly with your specific circumstances.
They can provide more specific guidance based on your individual application and the particular course you're interested in.