Main v Secretary of State for the Environment and South Oxfordshire District Council (1998) 77 P&CR 300
Main lawful development certificate is a useful High Court authority on composite uses and the precision required when a certificate of lawful existing use describes what is lawful on a site.
The court held that haulage and skip-hire activities at a scrapyard could not simply be dismissed as ancillary because they were relatively small compared with the dominant scrap business. They were capable of being independent primary activities within a composite use, and the certificate had to describe the lawful use accurately.
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- Neutral citation
- (1998) 77 P&CR 300
- Court
- High Court, Queen's Bench Division
- Judgment date
- 22nd May 1998
- Judge
- Malcolm Spence QC, sitting as a Deputy High Court Judge
What Main decided
The case concerned a large scrapyard at Ewelme in Oxfordshire. Alongside the scrap business, the land was also used for haulage and skip-hire activities.
A lawful-development certificate was issued describing the established use, but the treatment of the haulage and skip-hire elements was disputed.
Mr Malcolm Spence QC, sitting as a Deputy High Court Judge, held that the approach taken to those activities and the resulting certificate could not stand.
A small activity is not automatically ancillary
The fact that one activity occupies less land, employs fewer people or generates less business than another does not by itself make it ancillary.
The planning question is whether the smaller activity is genuinely subordinate to and serves the main use, or whether it has its own independent planning purpose.
In Main, non-scrap-related haulage and skip hire were capable of being independent primary activities rather than merely ancillary functions of the scrapyard.
A site can have a composite planning use
Where several activities take place within one planning unit and none can properly be treated as merely incidental or ancillary to another, the lawful use may be a mixed or composite use.
That classification matters because a certificate which describes only the dominant activity can understate the lawful planning position.
The correct description should capture the established planning character of the unit rather than reduce it to whichever business happens to be largest.
A lawful-development certificate needs precision
A certificate is intended to establish the lawful planning position with certainty. Its wording therefore matters enormously.
Main shows why the authority or Inspector should not issue a selectively qualified description which does not accurately reflect the use proved by the evidence.
A poorly worded certificate can create exactly the uncertainty the statutory procedure is meant to remove.
The planning unit and the use description are separate questions
First identify the appropriate planning unit. Then identify the character of the use carried on within that unit.
Those steps are connected but should not be collapsed into a simple comparison of the relative scale of each activity. A physically unified site can lawfully accommodate a composite use made up of several primary activities.
Why Main matters for CLEUD applications
When applying for a certificate, it is worth thinking carefully about the wording sought. A description which is too narrow can leave part of the established use unprotected; one which is too broad may not be supported by the evidence.
Planning Geek’s guide to Certificates of Lawful Existing Use or Development explains the current process and evidence requirements.
Read the Main case report
The reported judgment held by Planning Geek is available in the case law library. Gold Members can open the protected PDF below.
Main Lawful Development Certificate Case Law Page Updated: 10th September 2026