diff --git a/src/cache/inmemory/policies.ts b/src/cache/inmemory/policies.ts
index f0c98ee069b..23e5508e8ea 100644
--- a/src/cache/inmemory/policies.ts
+++ b/src/cache/inmemory/policies.ts
@@ -186,7 +186,7 @@ export type FieldMergeFunction<TExisting = any, TIncoming = TExisting> = (
   // reasons discussed in FieldReadFunction above.
   incoming: SafeReadonly<TIncoming>,
   options: FieldFunctionOptions,
-) => TExisting;
+) => SafeReadonly<TExisting>;
 
 export const defaultDataIdFromObject = (
   { __typename, id, _id }: Readonly<StoreObject>,
diff --git a/src/utilities/index.ts b/src/utilities/index.ts
index cd749e8ed4b..6c905bbb215 100644
--- a/src/utilities/index.ts
+++ b/src/utilities/index.ts
@@ -63,5 +63,6 @@ export {
 } from './graphql/transform';
 
 export {
+  concatPagination,
   offsetLimitPagination,
 } from './policies/pagination';
diff --git a/src/utilities/policies/pagination.ts b/src/utilities/policies/pagination.ts
index 30f54413dba..e30d617c0c4 100644
--- a/src/utilities/policies/pagination.ts
+++ b/src/utilities/policies/pagination.ts
@@ -2,6 +2,22 @@ import { FieldPolicy, Reference } from '../../cache';
 
 type KeyArgs = FieldPolicy<any>["keyArgs"];
 
+// A very basic pagination field policy that always concatenates new
+// results onto the existing array, without examining options.args.
+export function concatPagination<T = Reference>(
+  keyArgs: KeyArgs = false,
+): FieldPolicy<T[]> {
+  return {
+    keyArgs,
+    merge(existing, incoming) {
+      return existing ? [
+        ...existing,
+        ...incoming,
+      ] : incoming;
+    },
+  };
+}
+
 // A basic field policy that uses options.args.{offset,limit} to splice
 // the incoming data into the existing array. If your arguments are called
 // something different (like args.{start,count}), feel free to copy/paste