Cross-posting...:
Here's the response to my Access to Information request:
They refused to provide pages 4 and 5, regarding their triage criteria, using an exemption:
Which I do not agree with: triage criteria that determines whether an application is complex or not is NOT an investigative technique. Each application undergoes the same scrutiny (and therefore outcome). I will be complaining about this to the Information Commissioner (in addition to my existing complaint for them taking 34 days to complete and then 2 more days to put it in a mailbox)