diff --git a/src/main/java/com/gocardless/resources/BillingRequest.java b/src/main/java/com/gocardless/resources/BillingRequest.java
index 4f7521a5..9f500447 100644
--- a/src/main/java/com/gocardless/resources/BillingRequest.java
+++ b/src/main/java/com/gocardless/resources/BillingRequest.java
@@ -758,6 +758,7 @@ private PaymentRequest() {
         private FundsSettlement fundsSettlement;
         private Links links;
         private Map<String, Object> metadata;
+        private String reference;
         private String scheme;
 
         /**
@@ -818,6 +819,15 @@ public Map<String, Object> getMetadata() {
             return metadata;
         }
 
+        /**
+         * A custom payment reference defined by the merchant. It is only available for payments
+         * using the Direct Funds settlement model on the Faster Payments scheme.
+         * 
+         */
+        public String getReference() {
+            return reference;
+        }
+
         /**
          * (Optional) A scheme used for Open Banking payments. Currently `faster_payments` is
          * supported in the UK (GBP) and `sepa_credit_transfer` and `sepa_instant_credit_transfer`
diff --git a/src/main/java/com/gocardless/services/BillingRequestService.java b/src/main/java/com/gocardless/services/BillingRequestService.java
index 1a152f37..3dc82c6a 100644
--- a/src/main/java/com/gocardless/services/BillingRequestService.java
+++ b/src/main/java/com/gocardless/services/BillingRequestService.java
@@ -461,6 +461,19 @@ public BillingRequestCreateRequest withPaymentRequestMetadata(
             return this;
         }
 
+        /**
+         * A custom payment reference defined by the merchant. It is only available for payments
+         * using the Direct Funds settlement model on the Faster Payments scheme.
+         * 
+         */
+        public BillingRequestCreateRequest withPaymentRequestReference(String reference) {
+            if (paymentRequest == null) {
+                paymentRequest = new PaymentRequest();
+            }
+            paymentRequest.withReference(reference);
+            return this;
+        }
+
         /**
          * (Optional) A scheme used for Open Banking payments. Currently `faster_payments` is
          * supported in the UK (GBP) and `sepa_credit_transfer` and `sepa_instant_credit_transfer`
@@ -895,6 +908,7 @@ public static class PaymentRequest {
             private String description;
             private FundsSettlement fundsSettlement;
             private Map<String, String> metadata;
+            private String reference;
             private String scheme;
 
             /**
@@ -957,6 +971,16 @@ public PaymentRequest withMetadata(Map<String, String> metadata) {
                 return this;
             }
 
+            /**
+             * A custom payment reference defined by the merchant. It is only available for payments
+             * using the Direct Funds settlement model on the Faster Payments scheme.
+             * 
+             */
+            public PaymentRequest withReference(String reference) {
+                this.reference = reference;
+                return this;
+            }
+
             /**
              * (Optional) A scheme used for Open Banking payments. Currently `faster_payments` is
              * supported in the UK (GBP) and `sepa_credit_transfer` and