Read the conditions attached to the actual permission alongside any premises licence. Complying with one regime does not remove obligations under the other, or the separate law on statutory nuisance. [1][2][3]
There is no single closing time for London businesses
Operating hours depend on the premises, the activity and the relevant permissions. A café's permitted customer hours may differ from restrictions on deliveries, refuse collections or external plant. National noise guidance recognises that timing and the type of activity matter to the effect on neighbouring occupiers. [4][1]
Read the exact wording. A condition saying that premises must not be open to customers after a specified time is not necessarily written in the same terms as one restricting all activity on site. Do not assume that a licence authorising later alcohol sales varies an earlier planning condition. [2][1]
Assess the whole noise picture
A plant assessment may need to consider fan noise, vibration, location and the hours it operates. For restaurants and other evening uses, customer activity outside can also matter. A report dealing only with equipment inside the building may not address the effects of the full operation. [4][5]
Mitigation can include reducing noise at source, repositioning or enclosing equipment, improving the layout and using operating restrictions. National guidance cautions against treating noise as a single context-free number: the character, duration and setting of the sound can affect the assessment. [4]
Conditions can require action before opening
Some permissions require details to be approved before development starts or before the use begins. Others require approved mitigation to be installed and maintained. Prepare a conditions schedule showing the trigger, the evidence required and the relevant drawings or reports. [1]
This is different from simply submitting an assessment with the application. Where a condition requires the council's approval of details, establish that the approval has been obtained before reaching the stated trigger. [1]
Changing hours or replacing equipment
A proposed change should be checked against the approved plans and conditions. A replacement fan in a different location, more intensive cooking or later opening may require an application to alter the planning position rather than an assumption that the original consent covers it. [1][6]
Provide information proportionate to the change. For later hours, the noise case needs to address the additional period and surrounding occupiers; for plant changes, use the actual proposed equipment rather than an old generic specification. [4][5]
Planning permission is not protection from nuisance action
Councils have separate duties concerning statutory noise nuisance. The special night-noise warning powers described in GOV.UK guidance do not mean that all noise before night-time is acceptable, or that planning permission prevents a nuisance investigation. [3]
Where homes are being introduced near an existing business, the developer must also consider the business's permitted activities, not only its current quiet periods. This “agent of change” approach is intended to address potential conflict through the new development's design and mitigation. [4]