How an organisation decides what to keep and what to destroy

Keeping everything is a decision, and it is the wrong one

The instinctive assumption is that a large organisation keeps everything indefinitely, because storage is cheap and deleting things seems risky. In practice the opposite discipline applies. Records are kept for as long as there is a reason to keep them, and then deliberately destroyed, and the destruction is as planned as the keeping.

There are several reasons for that. Old records that nobody needs are a liability if they are lost or exposed. They also make searching worse, they cost money to migrate every time a system is replaced, and holding personal information without a purpose is inconsistent with the principles most data regimes are built on. So the default is not to keep. The default is to keep for a stated period.

The retention schedule is the document that decides

Somewhere in nearly every organisation is a retention schedule: a list of record types, each with a period and a trigger. It is unexciting, rarely read outside the teams that maintain it, and it quietly governs whether anybody will be able to answer a question about you in nine years’ time.

The periods come from a mixture of sources. Some are set by legislation or by a regulator, some by the length of time a claim could realistically arise, some by professional guidance, and some by an internal judgement about how long the information stays useful. Because the sources differ, the periods differ, which is why one department can produce a document from a decade ago while another cannot produce one from four years ago.

A retention period usually starts later than the record does

The detail that surprises people is the trigger. A period is rarely counted from the date a document was created; it is counted from an event that closes the matter — the end of a relationship, the closure of a case, the final payment, the last action on the account.

That is why a file created twenty years ago can still be within its retention period, and why a file created recently can be disposed of quickly if the matter closed immediately. It also means that reopening a matter can restart the clock, since the trigger event has moved. Nobody is being obstructive when they cannot tell you off the top of their head whether something still exists. The answer depends on a date and a rule they have to go and look up.

Disposal is a process, not an absence of one

Destruction under a schedule is a controlled activity. It is usually run in batches, reviewed before it happens, carried out in a way appropriate to the sensitivity of the material, and recorded, so that the organisation can later show what was destroyed, when and under which rule.

That record of disposal is the reason a well-run organisation can say confidently that it no longer holds something, rather than merely failing to find it. The two statements sound alike and are very different in weight. One is a search that came back empty; the other is evidence that the item was disposed of on a particular date under a particular policy.

Holds, archives and the copies that outlive the original

Two things interrupt the tidy picture. The first is a legal or investigative hold, which suspends destruction for anything relevant to a dispute or an inquiry — deleting on schedule during proceedings is exactly the outcome the hold exists to prevent. The second is selection for permanent preservation, where a small proportion of material is judged to have long-term value and moves to an archive instead of being destroyed.

And then there are the copies. A record deleted from a live system may persist for a period in backups, in an extract sent to another department, or in a report that summarised it. Good practice is for the schedule to cover derived copies too, though this is genuinely difficult in a large estate, and it is one of the harder problems in records management rather than a solved one.

What this means when you need something old

Ask early rather than eventually. Retention periods are the reason a request that would have been trivial three years ago is impossible today, and no amount of good will recovers something that has gone through a controlled disposal.

It is also worth keeping your own copies of anything that proves a completed relationship — final statements, closure letters, confirmations of settlement — because these are precisely the documents whose retention clock started when the matter ended. And if you are told a record no longer exists, it is reasonable to ask what the retention period was and when disposal occurred. That answer is generally available, and it is a far more satisfactory conclusion than an unexplained blank.