diff --git a/code/dataobjects/EventRegistration.php b/code/dataobjects/EventRegistration.php
index <HASH>..<HASH> 100644
--- a/code/dataobjects/EventRegistration.php
+++ b/code/dataobjects/EventRegistration.php
@@ -32,7 +32,8 @@ class EventRegistration extends DataObject {
 		'Name'            => 'Name',
 		'Email'           => 'Email',
 		'EventTitle'      => 'Event',
-		'DateTimeSummary' => 'Dates And Times'
+		'DateTimeSummary' => 'Dates And Times',
+		'TotalQuantity'   => 'Places'
 	);
 
 	protected function onBeforeWrite() {
@@ -80,6 +81,13 @@ class EventRegistration extends DataObject {
 	}
 
 	/**
+	 * @return int
+	 */
+	public function TotalQuantity() {
+		return array_sum($this->Tickets()->map('ID', 'Quantity'));
+	}
+
+	/**
 	 * @return string
 	 */
 	public function Link() {
MINOR: Added a column to the event registration table showing the number of places registered for.