The trains departing from Monument (1&2) around 00:12 will be...

• 00:09 : South Gosforth
• 00:12 : Benton
• 00:19 : South Gosforth
• 00:23 : South Gosforth
• 00:25 : South Gosforth

You can walk up the stairs to platforms 3 and 4.