Don't throw anything away

The DWP's Managing Customer Records Guide indicates that records are routinely destroyed after just 14 months.  It's been the policy of the all the organisations I've ever worked for to keep such records for at least 6 years.

In several cases I've seen documents destroyed by the DWP, but retained by claimants, have been crucial.  My advice is never throw anything away you receive from the DWP - it could be important later on.