You may be able to apply for a PhD or Postgraduate Masters loan to help you fund your PhD.
Loans for PhD study
The PhD loan can help with fees and living costs, and you repay your PhD loan at 6% of your income over £21,000 per year.
If you are a student from the United States, you may be able to apply for funding through the federal aid program.
Loans for MPhil study
If you are from the UK and you want to do an MPhil, you may be eligible for Postgraduate Masters Loans.