Where do I find the HG reference? August 07, 2023 12:24 Updated Head over to your 'Payments' page. Scroll down to 'Top up account' and click on the tick box next to 'By bank transfer'. You'll see the unique HG reference next to this AND next to 'Reference'. Related articles How to add and use reason codes Can I check the balance of my voucher? Where do I log in? How do I top up my account? How can I find a specific welfare voucher that I have made?