diff --git a/synapse/storage/transactions.py b/synapse/storage/transactions.py
index b40a070b69..4475c451c1 100644
--- a/synapse/storage/transactions.py
+++ b/synapse/storage/transactions.py
@@ -16,8 +16,6 @@
 from ._base import SQLBaseStore
 from synapse.util.caches.descriptors import cached
 
-from collections import namedtuple
-
 from canonicaljson import encode_canonical_json
 import logging
 
@@ -50,12 +48,15 @@ class TransactionStore(SQLBaseStore):
     def _get_received_txn_response(self, txn, transaction_id, origin):
         result = self._simple_select_one_txn(
             txn,
-            table=ReceivedTransactionsTable.table_name,
+            table="received_transactions",
             keyvalues={
                 "transaction_id": transaction_id,
                 "origin": origin,
             },
-            retcols=ReceivedTransactionsTable.fields,
+            retcols=(
+                "transaction_id", "origin", "ts", "response_code", "response_json",
+                "has_been_referenced",
+            ),
             allow_none=True,
         )
 
@@ -79,7 +80,7 @@ class TransactionStore(SQLBaseStore):
         """
 
         return self._simple_insert(
-            table=ReceivedTransactionsTable.table_name,
+            table="received_transactions",
             values={
                 "transaction_id": transaction_id,
                 "origin": origin,
@@ -136,7 +137,7 @@ class TransactionStore(SQLBaseStore):
 
         self._simple_insert_txn(
             txn,
-            table=SentTransactions.table_name,
+            table="sent_transactions",
             values={
                 "id": next_id,
                 "transaction_id": transaction_id,
@@ -171,7 +172,7 @@ class TransactionStore(SQLBaseStore):
                        code, response_json):
         self._simple_update_one_txn(
             txn,
-            table=SentTransactions.table_name,
+            table="sent_transactions",
             keyvalues={
                 "transaction_id": transaction_id,
                 "destination": destination,
@@ -229,11 +230,11 @@ class TransactionStore(SQLBaseStore):
     def _get_destination_retry_timings(self, txn, destination):
         result = self._simple_select_one_txn(
             txn,
-            table=DestinationsTable.table_name,
+            table="destinations",
             keyvalues={
                 "destination": destination,
             },
-            retcols=DestinationsTable.fields,
+            retcols=("destination", "retry_last_ts", "retry_interval"),
             allow_none=True,
         )
 
@@ -304,52 +305,3 @@ class TransactionStore(SQLBaseStore):
 
         txn.execute(query, (self._clock.time_msec(),))
         return self.cursor_to_dict(txn)
-
-
-class ReceivedTransactionsTable(object):
-    table_name = "received_transactions"
-
-    fields = [
-        "transaction_id",
-        "origin",
-        "ts",
-        "response_code",
-        "response_json",
-        "has_been_referenced",
-    ]
-
-
-class SentTransactions(object):
-    table_name = "sent_transactions"
-
-    fields = [
-        "id",
-        "transaction_id",
-        "destination",
-        "ts",
-        "response_code",
-        "response_json",
-    ]
-
-    EntryType = namedtuple("SentTransactionsEntry", fields)
-
-
-class TransactionsToPduTable(object):
-    table_name = "transaction_id_to_pdu"
-
-    fields = [
-        "transaction_id",
-        "destination",
-        "pdu_id",
-        "pdu_origin",
-    ]
-
-
-class DestinationsTable(object):
-    table_name = "destinations"
-
-    fields = [
-        "destination",
-        "retry_last_ts",
-        "retry_interval",
-    ]
diff --git a/tests/handlers/test_presence.py b/tests/handlers/test_presence.py
index 15000aae0c..447a22b5fc 100644
--- a/tests/handlers/test_presence.py
+++ b/tests/handlers/test_presence.py
@@ -28,7 +28,6 @@ from synapse.api.constants import PresenceState
 from synapse.api.errors import SynapseError
 from synapse.handlers.presence import PresenceHandler, UserPresenceCache
 from synapse.streams.config import SourcePaginationConfig
-from synapse.storage.transactions import DestinationsTable
 from synapse.types import UserID
 
 OFFLINE = PresenceState.OFFLINE
diff --git a/tests/handlers/test_typing.py b/tests/handlers/test_typing.py
index 124bc10e0f..763c04d667 100644
--- a/tests/handlers/test_typing.py
+++ b/tests/handlers/test_typing.py
@@ -27,7 +27,6 @@ from ..utils import (
 from synapse.api.errors import AuthError
 from synapse.handlers.typing import TypingNotificationHandler
 
-from synapse.storage.transactions import DestinationsTable
 from synapse.types import UserID