diff --git a/request-blocklist/README.md b/request-blocklist/README.md
new file mode 100644
index 0000000..a3081a1
--- /dev/null
+++ b/request-blocklist/README.md
@@ -0,0 +1,41 @@
+# Request Blocklist tests
+
+## Intro
+
+These are test cases for the Request Blocklist feature, that lets us block
+requests where necessary, e.g. to fix website breakage. There are also test
+cases included for how the Request Blocking feature interacts with other
+features such as the Tracker Allowlist and the Tracker Blocklist.
+
+
+## Files
+
+```
+.
+├── config-reference.json          # Reference configuration.
+├── surrogates-reference.txt       # Reference surrogates.txt
+├── tds-reference.json             # Reference Tracker Blocklist.
+├── tests.json                     # The test cases.
+└── user-allowlist-reference.json  # Reference list of user-allowlisted domains.
+```
+
+
+## Test structure
+
+```js
+{
+    // Test name
+    "name": "matching rule, <all> domains",
+
+    // Details of the test request
+    "requestUrl": "https://request-blocklist.example/block",
+    "requestType": "image",
+    "websiteUrl": "https://website.example",
+
+    // Expected action (either "block" or "allow")
+    "expectAction": "block"
+
+    // Platform exceptions for the test
+    "exceptPlatforms": []
+}
+```
diff --git a/request-blocklist/config-reference.json b/request-blocklist/config-reference.json
new file mode 100644
index 0000000..65d8264
--- /dev/null
+++ b/request-blocklist/config-reference.json
@@ -0,0 +1,151 @@
+{
+  "version": 1,
+  "features": {
+    "contentBlocking": {
+      "state": "enabled",
+      "exceptions": [
+        {
+          "domain": "content-blocking-exception.example",
+          "reason": "Example content blocking exception"
+        }
+      ]
+    },
+    "requestBlocklist": {
+      "state": "enabled",
+      "settings": {
+        "blockedRequests": {
+          "request-blocklist.example": {
+            "rules": [
+              {
+                "rule": "request-blocklist.example/block",
+                "domains": ["<all>"],
+                "reason": "Example all-domain blocking rule"
+              },
+              {
+                "rule": "request-blocklist.example/*/block",
+                "domains": ["<all>"],
+                "reason": "Example all-domain wildcard blocking rule"
+              },
+              {
+                "rule": "request-blocklist.example/sometimes-block",
+                "domains": ["sometimes.example", "subdomain.different.example"],
+                "reason": "Example domain-limited blocking rule"
+              },
+              {
+                "rule": "request-blocklist.example/.*/regex",
+                "domains": ["<all>"],
+                "reason": "Example rule incorrectly using regex syntax"
+              },
+              {
+                "rule": "request-blocklist.example/CASE",
+                "domains": ["<all>"],
+                "reason": "Example rule for case sensitive matching"
+              },
+              {
+                "rule": "||request-blocklist.example^adblock-filter",
+                "domains": ["<all>"],
+                "reason": "Example rule incorrectly using adblock filter syntax"
+              },
+              {
+                "rule": "request-blocklist.example/missing-prop",
+                "reason": "Example rule incorrectly missing domains property"
+              },
+              {
+                "rule": "request-blocklist.example/extra-prop",
+                "domains": ["<all>"],
+                "unknown": "value",
+                "reason": "Example rule incorrectly including unknown property"
+              },
+              {
+                "rule": "request-blocklist.example:3000/port-block",
+                "domains": ["<all>"],
+                "reason": "Example blocking rule with port part"
+              },
+              {
+                "rule": "request-blocklist.example:443/incorrect-port-block",
+                "domains": ["<all>"],
+                "reason": "Example blocking rule that incorrectly includes redundant port"
+              },
+              {
+                "rule": "request-blocklist.example/incorrect*query-part",
+                "domains": ["<all>"],
+                "reason": "Example blocking rule that incorrectly matches query string"
+              }
+            ]
+          },
+          "subdomain.request-blocklist.example": {
+            "rules": [
+              {
+                "rule": "subdomain.request-blocklist.example/subdomain",
+                "domains": ["<all>"],
+                "reason": "Example tracker entry and blocking rule for subdomain"
+              }
+            ]
+          },
+          "request-blocklist-ordering.example": {
+            "rules": [
+              {
+                "rule": "request-blocklist-ordering.example/block",
+                "domains": ["sometimes.example"],
+                "reason": "Example domain-specific blocking rule"
+              },
+              {
+                "rule": "request-blocklist-ordering.example/block/path",
+                "domains": ["<all>"],
+                "reason": "Example blocking rule with extra path part"
+              },
+              {
+                "rule": "request-blocklist-ordering.example/block",
+                "domains": ["<all>"],
+                "reason": "Example blocking rule that should still apply to all domains"
+              }
+            ]
+          },
+          "tracker.example": {
+            "rules": [
+              {
+                "rule": "tracker.example/*.js",
+                "domains": ["<all>"],
+                "reason": "Example blocking rule that applies to tracking requests"
+              },
+              {
+                "rule": "tracker.example/block-first-party",
+                "domains": ["tracker.example"],
+                "reason": "Example blocking rule that applies to first-party requests"
+              }
+            ]
+          }
+        }
+      },
+      "exceptions": [
+        {
+          "domain": "request-blocking-exception.example",
+          "reason": "Example request-blocking exception"
+        }
+      ]
+    },
+    "trackerAllowlist": {
+      "state": "enabled",
+      "settings": {
+        "allowlistedTrackers": {
+          "request-blocklist.example": {
+            "rules": [
+              {
+                "rule": "request-blocklist.example/block",
+                "domains": ["allowlisted-website.example"],
+                "reason": "Example tracker allowlist entry"
+              }
+            ]
+          }
+        },
+        "exceptions": []
+      }
+    }
+  },
+  "unprotectedTemporary": [
+    {
+      "domain": "unprotected-temporary.example",
+      "reason": "Unprotected temporary example"
+    }
+  ]
+}
diff --git a/request-blocklist/surrogates-reference.txt b/request-blocklist/surrogates-reference.txt
new file mode 100644
index 0000000..d28e493
--- /dev/null
+++ b/request-blocklist/surrogates-reference.txt
@@ -0,0 +1,4 @@
+tracker.example/noop.js application/javascript
+(() => {
+    'use strict';
+})();
diff --git a/request-blocklist/tds-reference.json b/request-blocklist/tds-reference.json
new file mode 100644
index 0000000..4e60ad5
--- /dev/null
+++ b/request-blocklist/tds-reference.json
@@ -0,0 +1,42 @@
+{
+  "trackers": {
+    "tracker.example": {
+      "domain": "tracker.example",
+      "owner": {
+        "name": "Example Entity",
+        "displayName": "Example Entity"
+      },
+      "prevalence": 0,
+      "fingerprinting": 0,
+      "cookies": 0,
+      "categories": [],
+      "default": "ignore",
+      "rules": [
+        {
+          "rule": "tracker.example/analytics.js",
+          "surrogate": "noop.js",
+          "fingerprinting": 0,
+          "cookies": 0
+        },
+        {
+          "rule": "tracker.example/block.js",
+          "fingerprinting": 0,
+          "cookies": 0
+        }
+      ]
+    }
+  },
+  "entities": {
+    "Example Entity": {
+      "domains": ["tracker.example"],
+      "prevalence": 0,
+      "displayName": "Example Entity"
+    }
+  },
+  "domains": {
+    "tracker.example": "Example Entity"
+  },
+  "cnames": {
+    "tracker.example": "tracker-example.cname.example"
+  }
+}
diff --git a/request-blocklist/tests.json b/request-blocklist/tests.json
new file mode 100644
index 0000000..93f1f0e
--- /dev/null
+++ b/request-blocklist/tests.json
@@ -0,0 +1,352 @@
+{
+  "basic": {
+    "name": "Basic",
+    "desc": "Basic Request Blocklist functionality",
+    "tests": [
+      {
+        "name": "matching rule, <all> domains",
+        "requestUrl": "https://request-blocklist.example/block",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule (subdomain), <all> domains",
+        "requestUrl": "https://subdomain.request-blocklist.example/block",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule (implicit wildcard), <all> domains",
+        "requestUrl": "https://request-blocklist.example/block/ignored",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, matching domain",
+        "requestUrl": "https://request-blocklist.example/sometimes-block",
+        "requestType": "image",
+        "websiteUrl": "https://sometimes.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, matching subdomain",
+        "requestUrl": "https://request-blocklist.example/sometimes-block",
+        "requestType": "image",
+        "websiteUrl": "https://subdomain.sometimes.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, matching (non-eTLD+1) domain",
+        "requestUrl": "https://request-blocklist.example/sometimes-block",
+        "requestType": "image",
+        "websiteUrl": "https://subdomain.different.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, matching (non-eTLD+1) subdomain",
+        "requestUrl": "https://request-blocklist.example/sometimes-block",
+        "requestType": "image",
+        "websiteUrl": "https://another.subdomain.different.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, non-matching domain",
+        "requestUrl": "https://request-blocklist.example/sometimes-block",
+        "requestType": "image",
+        "websiteUrl": "https://other-website.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, non-matching domain",
+        "requestUrl": "https://request-blocklist.example/sometimes-block",
+        "requestType": "image",
+        "websiteUrl": "https://different.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "non-matching rule",
+        "requestUrl": "https://other-website.example/no-match",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule with wildcard, <all> domains",
+        "requestUrl": "https://request-blocklist.example/path/block",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, port in URL",
+        "requestUrl": "https://request-blocklist.example:3000/port-block",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "non-matching rule due to port",
+        "requestUrl": "https://request-blocklist.example/port-block",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, first-party request",
+        "requestUrl": "https://request-blocklist.example/block",
+        "requestType": "image",
+        "websiteUrl": "https://request-blocklist.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, query part of URL considered",
+        "requestUrl": "https://request-blocklist.example/incorrect?query-part",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, '.' literal considered",
+        "requestUrl": "https://request-blocklist.example/.path/regex",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, case considered",
+        "requestUrl": "https://request-blocklist.example/CASE",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "non-matching rule due to case",
+        "requestUrl": "https://request-blocklist.example/case",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, URL case normalised",
+        "requestUrl": "HtTpS://ReQuEsT-BlOcKlIsT.ExAmPlE/CASE",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      }
+    ]
+  },
+  "allowlisting": {
+    "name": "Allowlisting",
+    "desc": "Interactions between allowlisting and the Request Blocklist",
+    "tests": [
+      {
+        "name": "matching rule, in tracker allowlist",
+        "requestUrl": "https://request-blocklist.example/block",
+        "requestType": "image",
+        "websiteUrl": "https://allowlisted-website.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, subdomain in tracker allowlist",
+        "requestUrl": "https://request-blocklist.example/block",
+        "requestType": "image",
+        "websiteUrl": "https://subdomain.allowlisted-website.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, content blocking disabled",
+        "requestUrl": "https://request-blocklist.example/block",
+        "requestType": "image",
+        "websiteUrl": "https://content-blocking-exception.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, subdomain content blocking disabled",
+        "requestUrl": "https://request-blocklist.example/block",
+        "requestType": "image",
+        "websiteUrl": "https://subdomain.content-blocking-exception.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, user allowlisted",
+        "requestUrl": "https://request-blocklist.example/block",
+        "requestType": "image",
+        "websiteUrl": "https://user-allowlisted.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, subdomain exception",
+        "requestUrl": "https://request-blocklist.example/block",
+        "requestType": "image",
+        "websiteUrl": "https://subdomain.request-blocking-exception.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      }
+    ]
+  },
+  "trackers": {
+    "name": "Trackers",
+    "desc": "Interactions between Tracker Blocklist and the Request Blocklist",
+    "tests": [
+      {
+        "name": "matching rule, tracker blocklist allow",
+        "requestUrl": "https://tracker.example/unknown.js",
+        "requestType": "script",
+        "websiteUrl": "https://website.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, tracker blocklist blocked",
+        "requestUrl": "https://tracker.example/block.js",
+        "requestType": "script",
+        "websiteUrl": "https://website.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, tracker blocklist surrogate",
+        "requestUrl": "https://tracker.example/analytics.js",
+        "requestType": "script",
+        "websiteUrl": "https://website.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, first-party request",
+        "requestUrl": "https://tracker.example/block-first-party",
+        "requestType": "image",
+        "websiteUrl": "https://tracker.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "matching rule, non-matching (cname alias) domain",
+        "requestUrl": "https://tracker.example/block-first-party",
+        "requestType": "image",
+        "websiteUrl": "https://tracker-example.cname.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "non-matching rule (cname alias), <all domains>",
+        "requestUrl": "https://tracker-example.cname.example/unknown.js",
+        "requestType": "script",
+        "websiteUrl": "https://website.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      }
+    ]
+  },
+  "incorrect": {
+    "name": "Incorrect",
+    "desc": "Incorrect rules that are not expected to match",
+    "tests": [
+      {
+        "name": "incorrect rule using regexp syntax",
+        "requestUrl": "https://request-blocklist.example/path/regex",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "incorrect rule using adblock filter syntax",
+        "requestUrl": "https://request-blocklist.example/adblock-filter",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "incorrect rule that misses required property",
+        "requestUrl": "https://request-blocklist.example/missing-prop",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "incorrect rule that has extra property",
+        "requestUrl": "https://request-blocklist.example/extra-prop",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "rules don't match main_frame requests (aka navigations)",
+        "requestUrl": "https://request-blocklist.example/block",
+        "requestType": "main_frame",
+        "websiteUrl": "https://request-blocklist.example/block",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "incorrect rule that includes redundant port in URL",
+        "requestUrl": "https://request-blocklist.example/incorrect-port-block",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "incorrect entry under subdomain (instead of etld+1)",
+        "requestUrl": "https://subdomain.request-blocklist.example/subdomain",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "allow",
+        "exceptPlatforms": []
+      }
+    ]
+  },
+  "ordering": {
+    "name": "Ordering",
+    "desc": "Rules that should apply despite other rules that don't",
+    "tests": [
+      {
+        "name": "two matching rules, first one applies to domain",
+        "requestUrl": "https://request-blocklist-ordering.example/block",
+        "requestType": "image",
+        "websiteUrl": "https://sometimes.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      },
+      {
+        "name": "two matching rules, second one applies to domain",
+        "requestUrl": "https://request-blocklist-ordering.example/block",
+        "requestType": "image",
+        "websiteUrl": "https://website.example",
+        "expectAction": "block",
+        "exceptPlatforms": []
+      }
+    ]
+  }
+}
diff --git a/request-blocklist/user-allowlist-reference.json b/request-blocklist/user-allowlist-reference.json
new file mode 100644
index 0000000..d41d88f
--- /dev/null
+++ b/request-blocklist/user-allowlist-reference.json
@@ -0,0 +1 @@
+["user-allowlisted.example"]