Good question.  As you, like most limited companies probably have shelves full of old invoices and records that need to be kept for at least 6 years.

Referencing from the Governments Web Site

How long to keep records

You must normally keep records for at least 6 years from the end of the company financial year they relate to.

You may need to keep records longer if:

• they show a transaction that covers more than one of the company’s accounting periods.
• the company has bought something that it expects to last more than 6 years, like equipment or machinery.
• you sent your Company Tax Return late.
• HMRC has started a compliance check into your Company Tax Return.

What you need is an annual contract with a company such as Secure Data Recycling that will remove and shred any unwanted documentation over 6 years old.

Compliance is one thing, clutter is another.