diff --git a/lib/Pear/LocalLoop.pm b/lib/Pear/LocalLoop.pm
index 59631e7..6b513a1 100644
--- a/lib/Pear/LocalLoop.pm
+++ b/lib/Pear/LocalLoop.pm
@@ -190,6 +190,9 @@ sub startup {
   $admin_routes->post('/organisations/add')->to('admin-organisations#add_org_submit');
   $admin_routes->get('/organisations/:id')->to('admin-organisations#valid_read');
   $admin_routes->post('/organisations/:id')->to('admin-organisations#valid_edit');
+  $admin_routes->get('/organisations/:id/merge')->to('admin-organisations#merge_list');
+  $admin_routes->get('/organisations/:id/merge/:target_id')->to('admin-organisations#merge_detail');
+  $admin_routes->post('/organisations/:id/merge/:target_id')->to('admin-organisations#merge_confirm');
 
   $admin_routes->get('/feedback')->to('admin-feedback#index');
   $admin_routes->get('/feedback/:id')->to('admin-feedback#read');
diff --git a/lib/Pear/LocalLoop/Controller/Admin/Organisations.pm b/lib/Pear/LocalLoop/Controller/Admin/Organisations.pm
index 2cb3660..8a4eb5f 100644
--- a/lib/Pear/LocalLoop/Controller/Admin/Organisations.pm
+++ b/lib/Pear/LocalLoop/Controller/Admin/Organisations.pm
@@ -3,6 +3,11 @@ use Mojo::Base 'Mojolicious::Controller';
 
 use Try::Tiny;
 
+has result_set => sub {
+  my $c = shift;
+  return $c->schema->resultset('Organisation');
+};
+
 sub list {
   my $c = shift;
 
@@ -127,4 +132,104 @@ sub valid_edit {
   $c->redirect_to( '/admin/organisations/');
 }
 
+sub merge_list {
+  my $c = shift;
+
+  my $org_id = $c->param('id');
+  my $org_result = $c->result_set->find($org_id);
+
+  if ( defined $org_result->entity->user ) {
+    $c->flash( error => 'Cannot merge from user-owned organisation!' );
+    $c->redirect_to( '/admin/organisations/' . $org_id );
+    return;
+  }
+  
+  my $org_rs = $c->result_set->search(
+    {
+      id => { '!=' => $org_id },
+    },
+    {
+      page => $c->param('page') || 1,
+      rows => 10,
+      order_by => { '-asc' => 'name' },
+    }
+  );
+
+  $c->stash(
+    org_result => $org_result,
+    org_rs => $org_rs,
+  );
+}
+
+sub merge_detail {
+  my $c = shift;
+
+  my $org_id = $c->param('id');
+  my $org_result = $c->result_set->find($org_id);
+
+  if ( defined $org_result->entity->user ) {
+    $c->flash( error => 'Cannot merge from user-owned organisation!' );
+    $c->redirect_to( '/admin/organisations/' . $org_id );
+    return;
+  }
+
+  my $target_id = $c->param('target_id');
+  my $target_result = $c->result_set->find($target_id);
+
+  unless ( defined $target_result ) {
+    $c->flash( error => 'Unknown target organisation' );
+    $c->redirect_to( '/admin/organisations/' . $org_id . '/merge' );
+    return;
+  }
+
+  $c->stash(
+    org_result => $org_result,
+    target_result => $target_result,
+  );
+}
+
+sub merge_confirm {
+  my $c = shift;
+
+  my $org_id = $c->param('id');
+  my $org_result = $c->result_set->find($org_id);
+
+  if ( defined $org_result->entity->user ) {
+    $c->flash( error => 'Cannot merge from user-owned organisation!' );
+    $c->redirect_to( '/admin/organisations/' . $org_id );
+    return;
+  }
+
+  my $target_id = $c->param('target_id');
+  my $target_result = $c->result_set->find($target_id);
+  my $confirm = $c->param('confirm');
+
+  if ( $confirm eq 'checked' && defined $org_result && defined $target_result ) {
+    try {
+      $c->schema->txn_do( sub {
+        # Done as an update, not update_all, so its damn fast - we're only
+        # editing an id which is guaranteed to be an integer here, and this
+        # makes it only one update statement.
+        $org_result->entity->sales->update(
+          { seller_id => $target_result->entity->id }
+        );
+        my $count = $org_result->entity->sales->count;
+        die "Failed to migrate all sales" if $count;
+        $org_result->entity->delete;
+        $c->schema->resultset('ImportLookup')->search({ entity_id => $org_result->entity->id })->delete;
+        my $org_count = $c->result_set->search({id => $org_result->id })->count;
+        my $entity_count = $c->schema->resultset('Entity')->search({id => $org_result->entity->id })->count;
+        die "Failed to remove org" if $org_count;
+        die "Failed to remove entity" if $entity_count;
+      });
+    } catch {
+      $c->app->log->warn($_);
+    };
+    $c->flash( error => 'Engage' );
+  } else {
+    $c->flash( error => 'You must tick the confirmation box to proceed' );
+  }
+  $c->redirect_to( '/admin/organisations/' . $org_id . '/merge/' . $target_id );
+}
+
 1;
diff --git a/lib/Pear/LocalLoop/Plugin/Currency.pm b/lib/Pear/LocalLoop/Plugin/Currency.pm
index 842cf89..f256f80 100644
--- a/lib/Pear/LocalLoop/Plugin/Currency.pm
+++ b/lib/Pear/LocalLoop/Plugin/Currency.pm
@@ -12,6 +12,11 @@ sub register {
     }
     return $value;
   });
+
+  $app->helper( format_currency_from_db => sub {
+    my ( $c, $value ) = @_;
+    return sprintf( '£%.2f', $value / 100000 );
+  });
 }
 
 1;
diff --git a/templates/admin/organisations/merge_detail.html.ep b/templates/admin/organisations/merge_detail.html.ep
new file mode 100644
index 0000000..4b3afce
--- /dev/null
+++ b/templates/admin/organisations/merge_detail.html.ep
@@ -0,0 +1,81 @@
+% layout 'admin_errors';
+% title 'Organisations';
+<div class="row">
+  <div class="col-12">
+    <h3 class="float-left">Merging <%= $org_result->name %> into <%= $target_result->name %></h3>
+      <a href="<%= url_for '/admin/organisations/' . $org_result->id . '/merge' %>" class="btn btn-success float-right">Back</a>
+  </div>
+  % for my $org ( $org_result, $target_result ) {
+  <div class="col-6">
+    <div class="card">
+      <h3 class="card-header">
+        <%= $org->name %>
+      </h3>
+      <div class="card-body">
+        <div class="row">
+          <div class="col-6">
+            Street Name
+          </div>
+          <div class="col-6">
+            %= $org->street_name
+          </div>
+          <div class="col-6">
+            Town/City
+          </div>
+          <div class="col-6">
+            %= $org->town
+          </div>
+          <div class="col-6">
+            Sector
+          </div>
+          <div class="col-6">
+            %= $org->sector
+          </div>
+          <div class="col-6">
+            Postcode
+          </div>
+          <div class="col-6">
+            %= $org->postcode
+          </div>
+          <div class="col-6">
+            Validated
+          </div>
+          <div class="col-6">
+            %= $org->pending ? 'no' : 'yes'
+          </div>
+          <div class="col-6">
+            Is Local
+          </div>
+          <div class="col-6">
+            %= $org->is_local ? 'yes' : 'no'
+          </div>
+        </div>
+      </div>
+      <div class="list-group list-group-flush">
+        <div class="list-group-item">
+          Transaction Count: <%= $org->entity->sales->count %>
+        </div>
+      </div>
+    </div>
+  </div>
+  % }
+  <div class="col-12">
+    <div class="card">
+      <div class="card-body">
+        <h1 class="card-title">
+          Warning: Cannot be undone!
+        </h1>
+        <p>
+          This will discard all basic information about this organisation, and
+          merge all transactions into the target organisation. This process has
+          no way of being undone.
+        </p>
+        <form action="<%= url_for %>" method="POST">
+          <input type="checkbox" name="confirm" value="checked">
+          <label>I confirm that I want this to happen</label>
+          <button type="submit" class="btn btn-danger">Confirm Merge</button>
+        </form>
+      </div>
+    </div>
+  </div>
+</div>
diff --git a/templates/admin/organisations/merge_list.html.ep b/templates/admin/organisations/merge_list.html.ep
new file mode 100644
index 0000000..0a0dc49
--- /dev/null
+++ b/templates/admin/organisations/merge_list.html.ep
@@ -0,0 +1,25 @@
+% layout 'admin_errors';
+% title 'Organisations';
+<div class="row">
+  <div class="col-12">
+    <h3>Target to merge into for <%= $org_result->name %></h3>
+  </div>
+  <div class="col-12">
+    <div class="card">
+      <h3 class="card-header">
+        Organisations
+        <a href="<%= url_for '/admin/organisations/' . $org_result->id %>" class="btn btn-success float-right">Back</a>
+      </h3>
+      <div class="list-group list-group-flush">
+        % for my $org ( $org_rs->all ) {
+        <a href="<%= url_for . '/' . $org->id %>" class="list-group-item list-group-item-action">
+          %= $org->name
+        </a>
+        % }
+      </div>
+    </div>
+  </div>
+  <div class="col-12">
+      %= bootstrap_pagination( $c->param('page') || 1, $org_rs->pager->last_page, { class => 'justify-content-center' } );
+  </div>
+</div>